" It is a synthetic substance made with natural materials."
Plastics are high molecular mass organic polymers that frequently incorporate additional materials.
Typically, they are synthetic and come from petrochemicals.
Plastics are produced from natural resources including coal, natural gas, salt, and crude oil through the polymerization process.
The process of joining monomer molecules in a chemical reaction to create polymer chains or three-dimensional networks is known as polymerization, in the field of polymer chemistry.
These monomers combine to create a lengthy chain that gives rise to a final product with particular features. Polymerization refers to the entire process of a polymer being created. Polymers include things like polythene and nylon 66.
Thus, we can define plastics as synthetic materials produced from natural resources.
Plastics are therefore a synthetic material made from natural materials.
To know more about plastics, click on the link below:
https://brainly.com/question/17925097
#SPJ9
Besides storage, what does a vacuole provide in a plant cell?
Multiple choice question.
cross out
A)
energy
cross out
B)
protein production
cross out
C)
structure
cross out
D)
communication with other cells
Animal cells typically have small vacuoles that aid in the sequestration of waste. Vacuoles in plant cells aid in preserving the balance of water.
What does a vacuole provide in a plant cell?A membrane-bound cell organelle is known as a vacuole. Animal cells typically have small vacuoles that aid in the sequestration of waste. Vacuoles in plant cells aid in preserving the balance of water. A single vacuole may occasionally occupy the majority of a plant cell's interior space.
Vacuoles are membrane-bound sacs that serve a variety of purposes in a cell's cytoplasm. Vacuoles are extremely important for serving as structural support, as well as functions like storage, waste disposal, protection, and growth, and they typically have a large size in mature plant cells.
The most noticeable organelle in plant cells is the vacuole. Due to its size, it plays a key role in the homeostasis process by storing a variety of inorganic and organic molecules.
To learn more about vacuole refer to:
https://brainly.com/question/3109110
#SPJ4
This element has 5 electrons in its 5p sub level
Answer: antimony
Explanation:
Underline the word that makes the statement false, put the correct word beside the sentence. If the statement is true, put "true" beside the sentence.
Example: The skin is the largest organ in the body. True
The skin has special cells called "melanomine" (melanocytes) that produces melanin, a special pigment that is responsible for our skin, hair, and eye color: True.
Skin's oil glands, found near the dermis's border with the epidermis, secrete an oily substance called sebum that lubricates skin and hair: True.
What is the skin?The skin is the largest organ found in the body. It functions as a covering and a protective layer for the organs found in the body.
The layers of the skin include:
the epidermis - this is the outermost layer of the skin that protects the body from the external environment. The epidermis also contains melanocytes which are special cells that produce melanin for skin pigmentation.the dermis - the inner layer of the skin below the epidermis where the sebaceous glands that secrete sebum are found.Learn more about the skin at: https://brainly.com/question/15440945
#SPJ1
Carter went outside to check the mail one sunny summer day. since he was staying in his yard, he put on shorts, a t-shirt, but no shoes. as carter stepped outside, he felt the warmth of the sunshine on his skin. he walked down the sidewalk, but his feet got so hot he had to jump into the grass. he got the mail and began walking back to the house. before he went inside, he felt a breeze on his face. select the statement(s) that accurately identify the types of energy transfer in the scenario. his feet getting hot on the sidewalk is an example of conduction. the sidewalk getting hot from the sun is an example of radiation. the sunshine touching his face is an example of conduction. the breeze is an example of convection. the warmth of the sunshine on his skin is an example of radiation.
When Carter went outside one summer day to check the mail, the following statements accurately identify the types of energy transfer:
his feet getting hot is an example of conductionthe sidewalk getting hot from the sun is an example of radiationthe breeze is an example of convectionthe warmth of the sunlight on his skin is an example of radiation.Conduction, convection and radiation are all methods of heat transfer. Conduction is the transfer of heat between two solid bodies in contact. It occurs when two solid bodies of different bodies are in contact, and heat always flows from the hotter body to the colder body.
Convection occurs when heat is transferred by the flow of matter in a liquid or gas. Liquids and gases are normally poor conductors of heat, but they are able to transfer heat through convection as the molecules of the fluid carry the thermal energy as they move. Radiation is the transfer of heat in a vacuum. Unlike conduction and convection, radiation does not require a material medium, as heat is transferred by electromagnetic waves.
When carter stepped on the sidewalk, there was a temperature difference between his foot and the sidewalk. This enabled the transfer of heat from the sidewalk to his feet through conduction. The sidewalk, however, was hot because it had been exposed under the sun. Infrared red rays from the sun transfer heat by radiation to the surface of the earth, and the sidewalk absorbed some of this radiation.
Radiation is also absorbed by the wind and carried about by convection, just like the warm breeze carter felt on his face. Some radiation was absorbed by Carter's skin, which was the warmth he felt on his skin from the sunshine. The sunlight touching his face is not an example of conduction because conduction only occurs when two solid surfaces are in contact.
Learn more about heat transfer here:
https://brainly.com/question/12342626
#SPJ4
The laboratory compared the mass of the starting reactants and final products of the combustion reaction. A technician determined the mass of the firewood and oxygen reactants before burning to be 2.72 kg. After the firewood finished burning, the pile of cooled ash that remained had a mass of 0.095 kg. According to the law of conservation of mass, matter is neither created nor destroyed in a chemical reaction. Do the results of the technician’s combustion experiment contradict the law of conservation of mass?
The results of the technician’s combustion experiment do not contradict the law of conservation of mass because some products escaped as gaseous carbon (iv) oxide, water vapor, and other gases.
What is the statement of the law of conservation of mass?The statement of the law of conservation of mass states that matter cannot be created nor destroyed, but change from one form to another.
This helps to explain that no loss in mass of a substance occurs in ordinary chemical reactions, rather, the sum of the masses of the reactants at the beginning of a reaction is equal to the sum of the products at the end of the reaction.
The balancing of chemical equations also follows this law.
Considering the given reaction:
The technician determined the mass of the firewood and oxygen reactants before burning to be 2.72 kg.
At the end of the reaction, after the firewood finished burning, the pile of cooled ash that remained had a mass of 0.095 kg.
When comparing the mass of the reactants and products, the mass of the product seems to be less than the mass of the reactants in contradiction to the law of conservation of mass.
However, there is no loss in mass of the materials because some products escaped in the form of gas into the atmosphere.
Learn more about the law of conservation of mass at: https://brainly.com/question/6392579
#SPJ1
Two different samples of matter are measured in each of these glass containers. Both of the containers show the same measure for both samples of matter. The samples most likely have which of these in common?.
Two different samples of the matter are measured in each of these glass containers. Both of the containers show same measure for both samples of matter. The samples most likely have in common is their volume.
What is volume?Each thing in three dimensions takes up some space. The volume of this area is what is being measured. The space occupied within an object's borders in the three dimensions is referred to as its volume. It is sometimes referred to as object's capacity.
Volume is a measurement of the three-dimensional space that is occupied.
Numerous imperial units or the SI-derived units, such as the cubic meter and liter, are frequently used to quantify it numerically (such as the gallon, quart, cubic inch). Volume and length (cubed) have symbiotic relationship. The volume of container is typically thought of as its capacity, not as the amount of space it takes up. In other words, volume is the amount of fluid (liquid or gas) that the container may hold.
Volume was initially measured using naturally occurring containers of a similar shape and later with the standardized containers. Arithmetic formulas can be used to quickly calculate volume of some straightforward three-dimensional shapes. If a formula for shape's boundary is known, it is possible to use integral calculus to determine the volumes of more complex shapes. No object in dimensions of zero, one, or two has volume; in the dimensions of four and higher, the hypervolume is a concept similar to the normal volume.
To know more about volume visit: https://brainly.com/question/13338592
#SPJ4
A student has to stay after school to make up a test. If she lives 9.8 km away from the school, how many minutes will it take her to get horne if she averages 42 miles per hour?
The time it will take the student to get home if she averages 42 miles per hour is 8.7 minutes.
How to calculate time?The time taken for an object to move over a certain distance can be calculated by dividing the distance moved by the average speed as follows:
Time = Distance/average speed
According to this question, a student has to stay after school to make up a test. If she lives 9.8 km away from the school. The time it will take her to get home can be calculated as follows:
9.8km is equivalent to 6.09 miles
Time = 6.09 mi ÷ 42mi/hr
Time = 0.145hours
0.145 hours can be converted to 8.7 minutes.
Therefore, it will take the student 8.7 minutes to get home.
Learn more about time at: https://brainly.com/question/9834403
#SPJ1
d) The wall of the bulb in a thermometer is made thin, why?
A thermometer bulb is built of thin glass so that it can effectively conduct heat from an object that comes into contact with the mercury in the bulb.
What is mercury?With the chemical symbol Hg and the atomic number 80, mercury is a class of elements. It was once called hydrargyrum, which is a combination of the Greek terms Hydor and Argyros, and it is also known as quicksilver. Mercury is toxic in its entirety. While some mercury compounds are more hazardous than others, all of them are harmful. Mercury exposures can harm the immune system, kidneys, liver, nervous system, and more depending on the type and quantity. The lungs, kidneys, and nervous system can all suffer damage from inhaling mercury fumes.
Mercury is utilized in pressure measuring devices even though a wide variety of liquids may be used due to its high density and reduced space requirement. The fact that PTFE is a good conductor of electricity makes it a valuable addition to electrical switches.
To know more about mercury ,visit:
https://brainly.com/question/2279846
#SPJ9
suggest a method to enhance the accuracy of a mass spectrometer
Answer:
Usually the use of two calibrant ions to bracket the analyte ion will achieve better accuracy. To achieve optimum mass accuracy the m/z of a single point calibrant ion should be as close as possible to that of the analyte ion; this is particularly important for magnetic sector mass spectrometers.
a mixture of 0.47 mole of h2 and 3.59 moles of hcl is heated to 2800°c. calculate the equilibrium partial pressures of h2, cl2, and hcl if the total pressure is 2.00 atm. for the reaction h2(g) 1 cl2(g) δ 2hcl(g) kp is 193 at 2800°c.
The partial pressures, based on the equilibrium constant, are 0.2825 atm for hydrogen, 0.0509 atm for chlorine and 1.6666 atm for HCl.
We know that:
[tex]pH_{2} + pCl_{2} + pHCl = 2 atm[/tex]
pH₂ - partial pressure of hydrogen
pCl₂ - partial pressure of chlorine
pHCl - partial pressure of HCl
We also know that the expression for the equilibrium constant looks like this:
[tex]K_{p} =\frac{pHCl^{2} }{pH_{2}*pCl_{2} } =193[/tex]
Because the total coefficients on the left and right sides of the reaction are equal (=2), then Kp = Kc. Finally, all the chlorine present in the mixture comes from HCl degradation. If we mark the partial pressure of chlorine as X, then:
[tex]\frac{(3.59-2X)^{2} }{(0.47+X)*X } =193[/tex]
When transformed, we get the following quadratic equation:
[tex]189X^{2} + 105.07X - 12.8881 = 0[/tex]
X = 0.1034
This means that we have 0.1034 moles of chlorine. We can use that to calculate the moles of hydrogen and HCl:
(0.47+0.1034) = 0.5734 moles of hydrogen;
(3.59 - 2*0.1034) = 3.3832 moles of HCl
The partial pressure of a gas (pX) in a gas mixture is equal to the molar percentage multiplied by the total pressure:
pX = P(total) * nₓ / n(total)
We can use this to calculate the partial pressures of all the gases present in the mixture:
pH₂ = 2 atm * 0.5734 mol / (0.1034 mol + 0.5374 mol + 3.3832 mol) = 0.2825 atm
pCl₂ = 2 atm * 0.1034 mol / (0.1034 mol + 0.5374 mol + 3.3832 mol) = 0.0509 atm
pHCl = 2 atm * 3.3832 mol / (0.1034 mol + 0.5374 mol + 3.3832 mol) = 1.6666 atm
You can learn more about partial pressure here:
brainly.com/question/13199169
#SPJ4
Aluminum metal is produced by passing an electric current
through a solution of aluminum oxide (Al2O3) dissolved in
molten cryolite (Na3AlF6). Calculate the molar masses of
Al2O3 and Na3AlF6
Aluminum metal is produced by passing an electric current through a solution of aluminum oxide (Al2O3) dissolved in molten cryolite (Na3AlF6). the molar masses of Al2O3 is 101.96g/mol and Na3AlF6 is 209.94g/mol.
Define electric current.Electric currents are streams of electrically charged particles, such as electrons or ions, moving through a conductor or a void. It is calculated as the net rate of electric charge flowing through a surface or into a control volume. 622 The moving particles are the charge carriers, which can be any of a variety of particle types depending on the conductor. Electric circuits typically use electrons flowing through a wire as charge carriers. In semiconductors, they could either be electrons or holes. In an electrolyte, ions are the charge carriers, whereas in plasma, an ionized gas, ions and electrons are the charge carriers.
to know more about electric current check the link given below:
brainly.com/question/2264542
#SPJ9
In 1909, scientist ernest rutherford directed a stream of high speed alpha particles at a thin piece of gold foil. Some of the particles passed through, some were deflected, and some bounced straight back. This result caused rutherford to conclude that.
The result of the experiment caused Rutherford to conclude that the atom mostly was made of the empty spaces and had a positively charged nucleus in it.
Rutherford assaulted extremely thin sheets of gold foil with swiftly moving alpha (∝) particles, along with his colleagues Hans Geiger and Ernest Marsden. Positively charged alpha particles have a mass that is around four times that of a hydrogen atom.
The majority of the alpha-particles, they discovered, were undeflected, and only a small percentage were bounced off the gold foil at extremely enormous angles. Some were even sent back in the direction of the source.
Rutherford thought about these findings and came to the following conclusion: The fact that the majority of alpha particles passed straight through the foil is proof that the atom is primarily made up of empty space. It was determined that there is a concentration of positive charge in the atom based on the small number of alpha particles that were deflected at large angles.
To know more about Rutherford's atomic model, refer to the following link:
https://brainly.com/question/21373854
#SPJ9
-Easy Points-
At my typography class..
My crush was sitting far away from me then got up and sat next to me. He was working on his computer for a little bit besides me then left. What does that mean. Why would he sit next to me when his computer was working just fine?what does it mean??
If you notice your crush is frequently right next to you or near you in a group setting or a meeting at work, it could be a strong indication that they are romantically interested in you.
What is typography?Typography is the art and technique of arranging type to display written language that is legible, readable, and appealing. Selecting typefaces, point sizes, line lengths, line spacing, and letter spacing, as well as adjusting the space between pairs of letters, are all part of type arrangement. Typography refers to the differences in text styles that result in distinct appearances. For example, blackletter was a popular typeface in the Middle Ages and was used to print many publications, including the Gutenberg Bible. The art of arranging letters and text in such a way that the copy is legible, clear, and visually appealing to the reader is known as typography. It includes font style, appearance, and structure, with the goal of eliciting specific emotions and conveying specific messages.To learn more about typography, refer to:
https://brainly.com/question/3942838
#SPJ13
When you see iron (II) that means iron with 2 valence electrons, so what will the
charge be?
2+
Explanation:Ions are separated into cations and anions.
Oxidation State
The roman numeral after iron represents the oxidation state. The oxidation state shows the hypothetical charge of an atom. Since iron can have different oxidation states, it needs to be noted using a roman numeral. Iron can either be iron (II) or iron (III), which have a 2+ and 3+ charge, respectively.
Cations
Ions are atoms that have negative or positive charges. Negative ions are called anions, and positive ions are called cations. Atoms that have almost full valence shells (5-7 valence electrons) take electrons and become anions. Atoms that have almost empty valence shells (1-3 valence electrons) lose electrons and become cations.
Iron (II) has 2 valence shell electrons, so it will be a cation. When it bonds, it will lose both valence electrons. Since atoms gain a 1+ charge for every electron it loses, iron (II) will have a 2+ charge.
Which equation shows the correct relationship between mechanical energy, kinetic energy, and potential energy? me = ke pe me ke = pe me = ke â€" pe me pe = ke
The correct relationship between mechanical energy, kinetic energy, and potential energy is M.E = P.E + K.E.
Mechanical energy, is the energy that an object possesses when it is in motion or the energy that an object stores due to its location. Renewable energy is also fueled by mechanical energy. In order to efficiently produce electricity or convert energy, many sources of renewable energy depend on mechanical energy.
The expression for total mechanical energy is as follows
M.E = P.E + K.E
As total mechanical energy is the sum of all the kinetic as well potential energy stored in the system.
To Learn more about mechanical energy visit the link:
brainly.com/question/12319302
#SPJ9
Question 8
Peter measured the height of a plant five times. He recorded the fol-
lowing results: 15.5 cm, 19.4 cm, 15.6 cm, 15.8 cm, 15.9 cm. Which of
the measurements is the least precise?
Peter measured the height of a plant five times the measurement that is the least precise is 19.4 cm,
This is further explained below.
What is a precise measurement?Generally, The accuracy of a material is defined as the degree to which two or more measurements agree with one another.
It is incredibly precise but not always accurate to measure something if you weigh it five times and get 3.2 kg each time. Accuracy is not necessary for precision.
In conclusion, Peter took five different readings of the height of a plant, and the one that is the least accurate is 19.4 centimeters.
Read more about precise measurement
https://brainly.com/question/1311561
#SPJ1
a 2.25 m solution of nh4br has a volume of 0.250 l the solution is diluted with pure water to a concentration of 0.125 m what is the final volume of the solution
The final volume of the solution is 4.5 L.
How can we calculate molality and volume of mixed solutions?
The idea of calculating molalities after combining solutions indicates that regardless of whether you change the solution's concentration or volume, the number of moles in the mixture stays the same. So, by expanding the volume of a solution by adding water, one can modify the molality or concentration of a particular molecule or ion in the solution.
The typical formula to calculate the same is M₁V₁ = M₂V₂
Given, initial molality of NH₄Br solution = M₁ = 2.25 m
Initial volume of NH₄Br solution = V₁ = 0.250 L
Final molality of NH₄Br solution = M₂ = 0.125 m
Let, final volume of NH₄Br solution = V₂
Using the relation obtained above, we have
2.25*0.250 = 0.125*V₂ ⇒ V₂ = (2.25*0.250)/0.125 = 4.5 L
Thus, the final volume after pure water addition is 4.5 L.
To learn more about mixing of solutions tap on the link below:
https://brainly.com/question/2869028
https://brainly.com/question/14366957
#SPJ9
PLEASE HELP!!! which of these atoms are isotopes??
2- still in slide 45, what does this pattern tell you about the underlying material? is it homogeneous or heterogeneous? is this material easily erodible? (think back to part 1 of this lab.)
The linear features in the given image resemble a homogenous, radial drainage pattern type volcanic river which is not easily erodible.
A river that emerges from the volcano's center flank is its most notable feature. The result is a volcanic river feature resembling a triangle-shaped accumulation of pebbles, sand, and even finer sedimentary rocks, like silt.
As the volcanic river systems exit, the drainage pattern is radial. For mountainous terrain, we often see a radial drainage pattern.
We can observe that the drainage pattern of the volcanic river is in a clear and well-oriented position, indicating that the underlying material is homogenous. We cannot obtain such a sort of characteristic in a heterogeneous material and thus the substance is homogenous because of this.
The materials of the volcanic river are not easily erodible since they are highly robust.
Learn more about volcanic rivers here:
https://brainly.com/question/15118914
#SPJ4
5.68 allied health acetylsalicylic acid (aspirin) can be synthesized by combining salicylic acid and acetic acid through a condensation reaction. the group from phenol on the salicylic acid condenses with the carboxylic acid group of acetic acid, forming acetylsalicylic acid. draw the structure of acetylsalicylic acid.
Allied health acetylsalicylic acid means aspirin can be synthesized by combining salicylic acid and acetic acid through a condensation reaction. the group from phenol on the salicylic acid condenses with the carboxylic acid group of acetic acid, forming acetylsalicylic acid and condensation reaction means any of a class of reactions in which two molecules combine usually in the presence of a catalyst with elimination of water or some other simple molecule
Aspirin can be relieve pain and reduce the serious problems like heart attacks and strokes and aspirin are form of combining salicylic acid and acetic acid through in which two molecules combine in the presence of catalyst with elimination of water and the reaction is
salicylic acid + acetic acid → acetylsalicylic acid
And then phenol on the salicylic acid condenses with the carboxylic acid group of acetic acid means
phenol + salicylic acid → carboxylic acid group of acetic acid
Structure of acetylsalicylic acid are given below
Know more about acetylsalicylic acid
https://brainly.com/question/14925906
#SPJ1
Measure it with sig figs
The measurement is 3 inches.
What does measuring mean?The attributes of an object or an event are measured and quantified so that they can be compared to other things or events. Therefore, measurement is the process of determining the size or smallness of a physical quantity in comparison to a primary reference quantity of a similar kind.
The range and applications of measurement depend on the situation and industry. Measurements do not apply to nominal attributes of things or occurrences in the natural sciences and engineering, as stated in the International Vocabulary of Metrology published by the International Bureau of Weights and Measures.
However, measures in a number of fields, such as statistics and the social and behavioral sciences, might comprise more than one level.
The specified length is 3 inches.
To know more about measurement, click on the link
https://brainly.com/question/27813386
SPJ10
Please help with this problem
All objects are bend or change shape in collision and other contact forces are applied to them. in collision between two object both objects experience forces that are equal to magnitude of and opposite in direction .such forces often cause one object is speed up (gain momentum) and other object to slow down (lose momentum).
What are collision?collision is defined as , the sudden violent meeting of two bodies, such as two billiard balls, a golf club and a ball, a hammer and a nail head, two wagons in direct contact, or a falling object and the floor. In addition to the properties of the materials of these two objects, two factors influence the result of the impact: the force and the time during which the objects collide. It is a common experience that a hard steel ball dropped on a steel plate will almost rebound to the position from which it was dropped, but a ball of putty or lead will not.
To learn more about collision ,refer;
https://brainly.com/question/4322828
#SPJ13
Explain how dissolution occurs using the collision theory to help you explain.
the rate constant for this second‑order reaction is 0.850 m−1⋅s−1 at 300 ∘c. a⟶products how long, in seconds, would it take for the concentration of a to decrease from 0.910 m to 0.340 m?
At 300 degrees Celsius, the rate constant for this alternative order response is 0.850 m1 s1.
Reaction and concentration.The adjectives "dilute" for results of relatively low attention and "concentrated" for results of comparatively strong focus are widely used when characterizing attention in informal, non-technical language. To concentrate a result, one must either increase the solute (such as alcohol) or decrease the detergent ( for illustration, water). To adulterate a result by disparity, one must either use more detergent or use less solute.
No more solute will dissolve after a certain point unless two substances are miscible. At this stage, the result is referred to as saturated. A product that has been impregnated with fresh solute will not dissolve, with the exception of certain circumstances.
When two or more motes meet with the proper exposure and force to create a new product, it is known as a chemical reaction. The links between the titles are broken and formed during this process. Reactants are composites that interact to make new composites, whereas products are composites that have just formed.
Situations, which might have a high or low value on the perpendicular axis of a graph and reflect the internal schema of situations, are usually referred to as attention ( for illustration," high serum situations of bilirubin" are attention of bilirubin in the blood serum that are lesser than normal).
To learn more about concentration and reaction click on the given link below.
https://brainly.com/question/1305611
#SPJ9
43. Answer the following questions using principles of chemical bonding and molecular structure.
(a) Consider the carbon dioxide molecule, CO2, and the carbonate ion, CO3²-
(ii) Account for the fact that the carbon-oxygen bond length in CO3²- is greater than the carbon- oxygen bond length in CO₂.
(b) Consider the molecules CF4, and SF4.
(i) Draw the complete Lewis electron-dot structure for each molecule.
Yes the fact is the carbon-oxygen bond length in CO2^-2 is greater than the carbon-oxygen bond length in CO2.
What is chemical bond and how the carbon-oxygen bond in carbonate is greater than the same in CO2?In every chemical compound is present the elements that are bonded with chemical bonds.Though there are different means of interaction , here we will only talk of chemical bonds .In the principle of chemistry chemical bond or interaction is considered to be the strongest .Actually all the bonds in the carbonate ion are equal , bonda are not fixed and show reasonance.The carbon of carbonate ion is bonded with three oxygen atoms.To know more about chemical bond visit:
https://brainly.com/question/15444131
#SPJ9
which of the following situations contains an example of a chemical reaction?
A bicycle rusting after it is left in the rain is an example of a chemical reaction because it involves oxidation (Option d).
What is a chemical reaction?A chemical reaction can be defined as a phenomenon in which one or more substances called reactants react to form one or more different compounds, which are known as products.
A chemical reaction may include an enzyme that works to increase the seed of the reaction in normal conditions by lowering the activation energy of the reaction.
Therefore, we can conclude that a chemical reaction such as oxidation in a bicycle is a process where reactants combine or break down to form the products of such reaction.
Complete question:
Which of the following situations contains an example of a chemical reaction?
a. Ice forming after water is placed in a freezer
b. Watercolor paint drying on paper
c. a sugar cube dissolving in a glass of water
d. a bicycle rusting after it is left in the rain
Learn more about chemical reactions here:
https://brainly.com/question/11231920
#SPJ1
URGENT:
In order for an element to transform into a new element, which particles must be released to change the number of protons. number of protons.
In order for an element to transform into a new element, the particles which must be released is the protons.
What us Proton?This is referred to as subatomic particle which is present in the nucleus and is positively charged. The proton and the electron must be equal in a neutral atom.
The proton is also equal to the atomic number which is why it is the particle which can be added removed to change the element. It is because a change in atomic number will automatically mean a change in the element which therefore makes it the correct choice.
Read more about Proton here https://brainly.com/question/1805828
#SPJ1
In order for an element to transform into a new element, the particles which must be released to change the number of protons is: beta particles.
What is a beta particle?A beta particle can be defined as an isotope which typically undergoes radioactive decay through the emission of a radiation with a negative one (-1) charge. This ultimately implies that, an atom of neutron becomes a proton and an electron (₀e⁻¹), and an atom of proton also becomes a neutron and a positron (⁰⁻e₁⁺) during beta decay.
Based on scientific information and records from radioactivity, we can reasonably infer and logically deduce that an atom of proton becomes a neutron and a positron during a beta decay as shown by this chemical reaction:
³H₁ -----> ³He₂ + ⁰e₋₁ + ⁰v₀
Read more on beta particle here: https://brainly.com/question/12448836
#SPJ1
ten potato chips are combusted in a bomb calorimeter. 1000 grams of water increases in temperature from 25oc to 45 oc. what is the total heat content of the ten potato chips?
The total heat content of the ten potato chips will be -1600J we can calculate this equation by using this reaction
ΔH = q = mCΔT
To determine the amount of heat acquired or lost by a sample (q) the equation used is
ΔH = q = mCΔT
where
m = mass of the sample
c = the specific heat,
T = temperature change
Here in this question
m = 1000 g
T = 2° C(change in temperature)
c = 4.18 J/g
Putting these values in the equation
q = 1000× 4.18 ×2
q = 1600 J
Here q is positive hence ΔH will be negative.
ΔH = -1600J
To learn more about Heat Content follow this link
https://brainly.com/question/22729342
#SPJ4
HELP ME!!!!!!
what is methyl orange and a Ph scale. is a litmus paper also an indicator.
Answer:
Litmus papes is an indicator
6. Describe how the orders with respect to two different reactants might be determined in a sample experiment where a
gas is produced as a result of mixing two solutions together. Carefully describe the measurements that should be
recorded and suggest a method of measuring the rate of the reaction.
A reaction rate can be calculated using a pretty simple procedure.A reaction rate must be calculated from tabulated values or discovered empirically because it depends on change over time.
Describe how a sample experiment might be used to determine the ordering with respect to two different reactants?
It is feasible to determine the reaction rate algebraically or graphically using the data that was obtained.The general advice and examples for calculating reaction rates are provided below.A stopwatch or any other timekeeper will do to measure time change.But more difficult procedures are needed to determine how much the reactants or products' concentrations have changed.There are typically two ways to acquire a change in concentration in a system:by keeping track of the reactant's gradual depletion over time, orBy keeping track of how a product changes over time There is no difference in the overall reaction whether an experimenter watches the reagents or products.However, there is a sign difference between the two speeds since reagents decrease and products grow during the reaction.As the reaction progresses, the reagent concentration falls, yielding a negative number for the concentration change.On the other side, the goods' concentration improves over time, producing a positive value.In order to solve an issue, set the overall rate of the reaction equal to the negative of a reagent's disappearance rate because it is customary to describe the rate of reaction as a positive number.The stoichiometric coefficients have an impact on the overall rate as well. It is important to note that by utilizing the various physical or chemical features (such as phase difference, reduction potential, etc.) of the reagents or products involved in the reaction, the process of determining the concentration can be significantly sped up.We have underlined how crucial it is to consider the reaction's sign in order to have a positive reaction rate.We shall now discuss the significance of stoichiometric coefficients.Depending on the product or reagent chosen to be monitored, a reaction rate can be reported somewhat differently.Given a response:aA+bB→cC+dD
(14.2.1)
Also possible to write as:
response rate = 1a
(A's disappearance rate)
= −1b
(B's disappearance rate
= 1c
(C's rate of formation)
= 1d\s(rate of production of D) (rate of formation of D)
There is only one average rate of reaction, despite the possibility that the concentrations of A, B, C, and D may all fluctuate at various rates.Select any rate and divide it by the stoichiometric coefficient to obtain this special rate.When the reaction's formula is as followsCR1R1+⋯+CRnRn→CP1P1+⋯+CPnPn(14.2.3)The following is the general example of the distinct average rate of reaction
response rate = 1CR1[R1
Δt=⋯=−1CRnΔ[R
Δt=1CP1Δ[P1]
Δt=⋯=1CPnΔ[Pn]
Δt
To learn more about rate of reaction refer
https://brainly.com/question/24795637#
#SPJ13