Whenever ionic chemicals are melted or dissolved in water, an electric current is produced. The B ions migrate toward the positive electrode in an ionic solution, while the A+ ions migrate toward the negative electrode.
Always dissociated, which means they are made up of independent cations (+) and anions, which are ionic compounds or salts (-). For instance, even in the solid state, there are just Na+ and Cl- ions in common salt, NaCl, and nothing that is "NaCl."
But the ions need to travel in order to conduct electricity. In the solid state, it is impossible to do this. Therefore, dry solid salts with no moisture at all are poor electrical conductors. The ions may travel, thus when they are in liquid form (melted) or solution (dissolved in water), they conduct electricity.
In other words, they conduct electricity because they are dissociated, not because electrical current is flowing through them.
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Using the image, how will oxygen complete its valence shell?
A) It will accept electrons to make a full set of 8.
B) It will accept electrons to form a cation.
C) It will donate electrons to form a cation.
D) It will accept electrons to make a full set of 6.
Answer:
A)it will accept electrons to make a full set of 8
Which of the following increases the motion of atoms and molecules?
Answer:
a rise in tempature
Explanation:
look it up
Elements on the Periodic Table are identified by name and also by a chemical symbol. Which of the following chemical symbols is NOT written correctly?
A) Be
B) CA
C) O
D) CI
Answer: D
Explanation:
This is wrong according to the Periodic Table here's a image! Hope this helped! :D
Describe the characteristics of single replacement reaction, how it is identified, and what determines if this reaction will occur. Give an example in your response.
The single replacement reaction is that in which one element is substituted for another element but in the same compound.
What is a single replacement reaction?A single replacement reaction is also known as a single displacement reaction. The single replacement reaction is defined as the reaction in which one element is substituted for another element in a compound. In the beginning, the starting element is always will be pure metal, such as pure zinc metal.
Identification:
We can determine the single replacement reaction when one element replaces another element in the same compound. This kind of reaction is represented by: A + BC → B + AC.
Determination:
The single replacement reaction can be determined when a less reactive element can be replaced by a more reactive element in a compound.
So we can conclude that one element is replaced by another element in the single replacement reaction.
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In a hot air balloon system, what are the boundaries? A. The air around the balloon. B. The balloon, basket, and cables C. Oxygen and fuel D. Fire and heat
A burner system, a basket, and an envelope are components shared by all hot air balloons. The size and shape of the envelope, the deflation mechanism, the shape and design of the basket, and the arrangement, style, and number of burners are all different.
What keeps a hot air balloon in place?The balloon will sink if the pilot leaves the valve open long enough. In essence, the sole controls are heat to raise the balloon and ventilation to lower it.
The pilot opens the vent that allows air out of the balloon canopy after locating a good landing area. The balloon began to drop as a result.
What is the name of the hole on a balloon?A hole known as a parachute vent can be found at the top of a hot air balloon. Pulling a rope to open it causes heated air to be released, causing the balloon to drop. The pilot has complete control over how much hot air is injected into the balloon, enabling flawless control.
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Starting with a 20. 0 ppm stock solution of the food dye yellow 6, you take a 5. 00 ml aliquot using a volumetric pipette and dispense the stock solution into a 10. 00 ml volumetric flask and then dilute with water. What is the concentration in ppm of the diluted solution?.
The concentration of the diluted solution of the food dye yellow 6 is found to be 10.0ppm.
A solution's concentration is an indicator of how much solute has been dissolved in a certain volume of solvent or solution. A solution with a significant concentration of dissolved solute is one that is concentrated. When there is just a minimal amount of dissolved solute in a solution, it is said to be diluted.
Parts per million (ppm) measurements of concentration indicate how many solute particles there are in every million solution particles.
Given:
Initial concentration, C1 = 20.0ppm
Initial Volume, V1 = 5mL
Final Volume, V2 = 10mL
To find:
Final concentration, C2 = ?
Formula:
C1V1 = C2V2
Calculations:
20 x 5 = C2 x 10
C2 = 20 x 5 / 10
C2 = 10.0ppm
Result:
The diluted solution of the food dye yellow 6 is found to have a concentration of 10.0ppm.
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What is the
wavelength of a
yellow light with a frequency
of 5.2 x 10¹4 Hz?
The wavelength of a yellow light with a frequency of 5.2 x 10¹4 Hz is 6 × 10⁻⁷.
What is wavelength ?
A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimetres (cm), or millimetres (mm) (mm).
When electromagnetic radiation such as radio waves, light waves, or infrared (heat) waves travel through space, they leave behind distinctive patterns. Each wave has a distinct size and shape. Wavelength is the separation between peaks (high points).
By measuring the distance between any two identical locations on adjacent waves, the wavelength can always be found. When a longitudinal wave is present, the distance between one compression and the next is measured to determine the wavelength.
γ = λf
λ = γ / f
= 3 × 10 ⁸ / 5 × 10 ⁴
= 0.6 × 10⁻⁶
λ = 6 × 10 ⁻⁷
Thus, The wavelength of a yellow light with a frequency of 5.2 x 10¹4 Hz is 6 × 10⁻⁷.
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Answer:
5.8 x 10^-7
Put in this answer and got it correct
Draw the structure of an alkene of five carbons that would give the same product as a result of either oxymercuration‑reduction or hydroboration‑oxidation.
Oxymercuration‑reduction or Hydroboration‑oxidation, gives the same compound 1-cyclo pentanol.
A compound in linguistics is a lexeme composed of more than one stem. The process of word construction that results in compound lexemes is known as compounding, composition, of nominal composition. An open compound or a spaces compound is one that uses a space rather hyphen or concatenation; the alternative is a closed compound.
The compound's meaning may be comparable to or distinct from the meanings of its constituents in isolation. With very few expectations, the first component stem in English compound words is emphasized.
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What is the ATOMIC NUMBER for an element with 5 protons, 6 neutrons and 2 electrons?
The element's Atomic number , which has 5 protons, 6 neutrons, and 2 electrons (the atomic number is the number of protons) = 5
What in an atomic number?the number assigned to a chemical element according to its atomic number in the periodic system, which places the elements in ascending order of the number of protons in their nuclei. As a result, the atomic number is also the number of protons, which in a neutral atom is always equal to the amount of electrons.
Briefing:Protons and neutrons are added to determine an element's mass number. The only number that may change while maintaining the identity of an element is the number of neutrons for that element (because the atomic number is the number of protons).
Mass number = protons + neutrons
According to the given data;Given:
5 protons,
6 neutrons
2 electrons
Atomic number = ?
We know that the Mass number = protons + neutrons:
Mass number = protons + neutrons
Mass number = 5 + 6:
Mass number = 11
The element's Atomic number , which has 5 protons, 6 neutrons, and 2 electrons (the atomic number is the number of protons) = 5.
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Please help balance the chemical equation.
No links or files! I will report
Answer:
H3PO4+3NaBr->3HBr+Na3PO4
Explanation:
H3PO4+3NaBr->3HBr+Na3PO4
this equation is balance because, the number of
H atom and Na atom is equal to right hand side reaction and Left hand side reaction.
A sample of sulfur consisting of three isotopes has a relative atomic mass of 32.133. The following table gives the relative abundance of two of these isotopes. Mass number of isotope 32 33 Relative abundance / % 92.4 1.9 Use this information to determine the mass number of the third isotope. Give your answer to the appropriate number of significant figures.
The mass number of the third isotope, given the data from the question is 34
How to determine the mass numberThe mass number of the third isotope can be obtained as illustrated below:
Relative atomic mass =32.133Mass of 1st isotope = 32Abundance of 1st = 92.4%Mass of 2nd isotope = 33Abundance of 2nd = 1.9%Abundance of 3rd = 100 - (92.4 + 1.9) = 5.7%Mass of 3rd isotope = ?Relative atomic mass = [(Mass of 1st × Abundance of 1st) / 100] + [(Mass of 2nd × Abundance of 2nd) / 100] + [(Mass of 3rd × Abundance of 3rd) / 100]
32.133 = [(32 × 92.4) / 100] + [(33 × 1.9) / 100] + [(Mass of 3rd × 5.7) / 100]
32.133 = 29.568 + 0.627 + (Mass of 3rd × 0.057)
32.133 = 30.195 + (Mass of 3rd × 0.057)
Collect like term
32.133 - 30.195 = Mass of 3rd × 0.057
1.938 = Mass of 3rd × 0.057
Divide both sides by 0.057
Mass of 3rd = 1.938 / 0.057
Mass of 3rd = 34
Thus, we can conclude that the mass of the 3rd isotope is 34
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Missing part:
See attached photo
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
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Calculate the mass of solid magnesium necessary to evolve 45.0mL of hydrogen gas at STP
The mass of solid magnesium necessary to evolve 45.0mL of hydrogen gas at STP is 0.48 g
What is the reaction between solid magnesium and acid?
The reaction between solid magnesium and any acid will displace hydrogen.
When solid magnesium reacts with hydrochloric acid, magnesium chloride and hydrogen gas will be formed.
At STP (standard temperature and pressure) 1 mole of solid magnesium will produce 22.4 L.
1 mole of Mg -----------------> 22.4 L of H₂
? mole of Mg ------------------> 45 mL of H₂
= (0.45 L) / (22.4)
= 0.02 mole
The mass of 1 mole of solid magnesium = 24 g/mol
required mass = 0.02 mole x 24 g/mol
required mass = 0.48 g
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For 10 points who do you know that the sun is made out of hydrogen and helium.
How would I explain it to a 3rd grader
The sun is made up of hydrogen and helium because these two gases are responsible for fusion reaction which generate light and heat energy.
Why sun is made up of hydrogen and helium?
Scientists use the device of spectroscopy in order to determine the composition of the Sun. The Sun is made up of light elements such as hydrogen and helium. It is composed of 74% hydrogen atom and 25% helium. In the core of the sun, gravitational forces produce huge pressure and temperatures. The temperature of the sun in this layer is 27 million degrees Fahrenheit that is equals to 15 million degrees Celsius. Hydrogen atoms are fuse together creating helium atom. This process is known as nuclear fusion reaction.
So we can conclude that the sun is made up of hydrogen and helium so that the fusion reaction is initiated.
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each of the reactants i nreaction a is a single sugar molecule also called a monosaccharide. what prefix before saccharide would you use to describe surcrose
In A, two types of molecules are generated. Two monosaccharides are bonded together by a condensation reaction in which glycoside bonds form between the monosaccharides and release the water molecule. In a specific, A reaction, fructose, and glucose molecules combine to generate sucrose (disaccharide).
In the case of the B reaction, two distinct amino acids (monomers) combine to generate a third molecule, a dipeptide; the bond formed between these two molecules is known as a peptide bond (amine group of first amino and cool group of second amino acid). This reaction is also condensation and results in the formation of water molecules. The fact that both create water molecules and dimers from two monomers is shared in this region.
Monosaccharides (from Greek monos: single, saccharin: sugar) are the most fundamental molecules (monomers) from which all carbohydrates are formed.
They are typically water-soluble white crystalline solids. Despite their name, only a few monosaccharides have a sweet flavor (sugars).
Sucrose, the most common table sugar, is a disaccharide made up of one molecule of each of the two monosaccharides D-glucose and D-fructose.
Monosaccharides include glucose (dextrose), fructose (levulose), and galactose.
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if the isotopes of Candium were truly isotopes (not candy pieces) what characteristics would they have in common?what would be different about each isotope?
If the isotopes of Cadmium were truly isotopes then their atomic number is the same but the atomic mass is different from one another.
What is isotopes?An isotope is a species of atoms that have the same atomic number as well as the position of that atom in the periodic table. They are identical in chemical behavior but the physical properties of that atom due to different atomic masses. The atoms belong to the same element, having same atomic number which is expressed as Z but having different mass number A, this is called isotope. For example, Carbon atom has three isotopes i.e. carbon-12, carbon-13 and carbon-14. These elements of carbon having mass numbers 12, 13 and 14 respectively.
So we can conclude that the isotopes of Cadmium have same atomic number but different mass number.
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If an atom contains one electron and one proton, will it carry any charge or not?
Answer:
Neutral, no charge
Explanation:
Proton is positive, while electron is negative.
Sum of both is 1 - 1 = 0
so the atom is neutral, which means it doesn't carry any charge.
Think about a wave model with a rope. How do you think the size of the wave going through the rope is affected by how far you moved your arm up and down or how far you moved your arm back and forth?
A.
The farther I move my arm, the larger the size of the wave in the rope.
B.
The less I move my arm, the larger the size of the wave in the rope.
C.
How far I move my arm has no effect on the size of the wave in the rope.
Given that the disturbance travels along the length of the rope, the farther I move my arm, the larger the size of the wave in the rope.
What is a wave?A wave is a disturbance along a medium which transfers energy. We know that a wave could be classified based on the nature of the propagation of the wave as the transverse or the longitudinal waves.
The wave that is created along a string is a longitudinal wave. The direction of the wave motion is the same as that of the disturbance. It is very easy to create a wave on a string when the sting is moved vigorously and the wave is found to travel quickly across the length of the rope is we can see from the image that I have attached to make the concept and the context of the answer a bit more clearer to the student in this case.
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4.00 mol co2 is placed in a 6.00 l container at a temperature where 12.3% of it decomposes. what is the value of kc for the following at this temperature?2 co2(g) equilibrium reaction arrow 2 co(g) o2(g)
Answer: 0.000806
Explanation: Set up the equilibrium table, find x and from there find your Kc=(Co)^2*(O2)/(O2)^2
HELPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Answer:
hi there, are u okay . what do u need help for
Answer:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not
Explanation:
Help please! this is the last question on my assignment and it’s confusing me.
Answer: -40
Explanation:
equation:
t = 1.8t+32
move variable to one side
t x -1.8t=32
add like terms
-.8t = 32
change decimal to fraction
-4t/5 = 32
multiply 5 to both sides
-4t = 160
devide -4
t = -40
If you measure a concentration of 25 mmol/l in the titration at ph = 10 and a concentration of 13 mmol/l with the titration at ph = 12.5 what is the concentration of ca2+? enter you answer in mmol/l but only enter a 2 digit number in the box, the program does not like numbers.
The concentration of [tex]Ca^{2+}[/tex] is 25mmol/l
Using complex-forming processes, complexometric titrations are primarily used to identify metal ions. Despite the fact that a variety of complexing agents can be utilized for this purpose, in actuality, the titrants are virtually always compounds with iminodiacetic acid functional groups. Titration is done in a solution with a pH of 10 (with an ammonium buffer added to promote the complexation of the [tex]Ca^{2+}[/tex] and [tex]Mg^{2+}[/tex] ions).
Since eriochrome black T forms deep red-wine-colored complexes with just a very small portion of the [tex]Mg^{2+}[/tex] ions, it is employed as the indication to show the end point. The most prevalent titration indicators in complexometric experiments are organic dyes, which work by creating colored. When the reaction is complete, the color changes because the indicator is replaced by EDTA, which creates a more stable complex with the metal.
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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
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How many mols are present in 3.07 grams of carbon?
Answer:
multiply by Avogadro's number:
3.07x6.002x10^23
=0.2556054185018347moles
Explanation:
After energy from food molecules has been extracted to make atp, electrons are transferred to a final acceptor. When the final electron acceptor is an organic molecule, the process is termed?.
When the final electron acceptor is an organic molecule the process to make ATP molecules is termed fermentation.
What is the fermentation pathway?The fermentation pathway is an anaerobic series of chemical reactions by which the cell can generate ATP (the energy coin of all types of cells) in order to perform metabolic activities such as cell differentiation and cell reproduction. During this process, pyruvate molecule is used as the final electron acceptor.
Therefore, we can conclude that the fermentation pathway uses pyruvic acid or pyruvate as the final acceptor, which is an organic molecule.
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Please discuss the following items in your introduction:
• Law of Conservation of Mass (with example using an equation)
• Reactants/ products
• Word equations/ skeleton/ balanced chemical equations
Law of conservation of mass states that in a closed system, the mass would be the same.
In a reaction, the compounds’ undergoing reaction is called reactants and the resultant of the reaction is called products.
Word equation uses words instead of chemical formulas. The skeleton equations use chemical formulas without mentioning the state of the compounds or the concentration. In balanced chemical reaction, mass and charge would be balanced.
Law of conservation of mass is similar to law of conservation of energy. It says that in a closed system, the mass would remain the same as mass is neither created nor destroyed.
[tex]H_{2}O[/tex] → [tex]H_{2} + O_{2}[/tex]
In this reaction, [tex]H_{2}O[/tex] is the reactant which has a mass of 18. H₂ and O₂ are the products with mass of 2 and 16 respectively.
In word equations, equation 1 can be written as
Water → Hydrogen + Water
In skeleton equation,
H₂0 → H₂ + O₂
In balanced chemical reaction,
2 H₂0 → 2 H₂ + O₂
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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.
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^20 10 Ne is an isotope of neon. How many protons does it have? How many neutrons? How many valence electrons? [Separate your answers with a space, as in 4 5 2.]
An isotope of neon with formula 20/10 Ne will possess 10 protons, 10 neutrons and 8 valence electrons i.e. 10, 10, 8.
What is an isotope?Isotopes are two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. Thus, isotopes have the same atomic number but a different mass number.
According to this question, an isotope of neon, an inert gas, has a formula of 20/10 Ne. The mass number of this isotope is 20 while the atomic number is 10.
This means that the number of neutrons is 20 - 10 = 10 while the number of protons is 10. Neon like all other noble gas has a filled shell and a valence electron of 8.
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how much boiling water would you need to raise the bath to body temperature (about 37 ∘c )? assume that no heat is transferred to the surrounding environment.
The Mass of water need to raise the bath to body temp is mathematically given as
M=4.76kg
This is further explained below.
What is the amount of water needed?Generally, The movement of kinetic energy from one media or item to another, or from an energy source to a medium or object, is what we understand to be the phenomenon of heat.
Radiation, conduction, and convection are the three different ways that this kind of energy transfer may take place.
In conclusion, Let us assume that M is the mass of water that has reached a temperature of 100 degrees Celsius.
The heat that is obtained by cold water is equal to the heat that is lost by boiling water.
Final temperature =37C
25x(37-25)=Mx(100-37)
M=300/63
M=4.76kg
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CQ
How much boiling water would you need to raise the bath to body temperature (about 37c )? Assume that no heat is transferred to the surrounding environment. Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with 25kg of room-temperature water (about 25c ). You figure that you can boil water on the stove and pour it into the bath to raise the temperature
the entropy change of any system and its surroundings, considered together, and resulting from any real process is positive, approaching zero when the process approaches
False, The entropy change of any system and its surroundings, considered together, and resulting from any real process is negative, approaching zero when the process approaches.
What is an entropy change?
An entropy change can be defined as the change that occurs in the state of disorder or randomness of a thermodynamic system that is associated with the conversion of heat or enthalpy into work.
Any system with a great degree of disorderliness has said to have more entropy.
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