The answer is 22.98977. We assume you are converting between grams Na and mole.
Granite has a Specific heat of 800 J/g C. What mass of granite is needed to store 150,200 Joules from 30 C to 75 C?
Granite has a specific heat of 800 J/g °C. the mass of granite is needed to store 150200 J from 30 °C to 75 °C is 4.17 g.
Given that :
specific heat of granite ( c ) = 800 J/g °C.
Q store = 150,200 J
temperature T1 = 30 °C.
temperature T2 = 75 °C.
now, Q = mc (T2-T1 )
150200 J = m × 800 J/g °C ( 75 °C - 30 °C )
m = 150200 J/ 800 J/g × 45
m = 150200 g / 36000
m = 4.17 g
Thus, Granite has a specific heat of 800 J/g °C. the mass of granite is needed to store 150200 J from 30 °C to 75 °C is 4.17 g.
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caterpillar is eating a leaf on a tomato plant.
Which two types of organisms are present in this scenario?
consumer and parasite
decomposer and prey
parasite and producer
producer and consumer
Answer:
producer and consumer
since the The caterpillar will later evolve and develop into a cocoon.
The cocoon will evolve into a butterfly and hence the organism will grow and develop.
Being a herbivorous animal the caterpillar represents consumer and plant is a producer.
The caterpillar also helps in rearing silk hence they are producers and consumers also
What is the difference between a homogenous and a heterogeneous mixture? Give 3 examples of each mixture and explain its uses in our daily lives.
Answer:
By combining two or more substances, a mixture is produced. A homogeneous solution tends to be identical, no matter how you sample it. Homogeneous mixtures are sources of water, saline solution, some alloys, and bitumen. Sand, oil and water, and chicken noodle soup are examples of heterogeneous mixtures.
Explanation:
A researcher grew a plant in an illuminated chamber with 18o-radiolabeled co2. After allowing time for photosynthesis, where will the radiolabeled 18o be found?.
After allowing time for photosynthesis the ¹⁸O-radiolabeled will be found in the plants in the form of C₆H₁₂O₆.
A researcher grew a plant in an illuminated chamber with ¹⁸O-radiolabeled CO₂. After allowing the time for photosynthesis, the ¹⁸O-radiolabeled will be found in C₆H₁₂O₆ in the plant.
Photosynthesis is a process in which plants produces their food by using sunlight, carbon dioxide and water to produce their food with the help of the a green colored pigment called chlorophyll.
It does not matter which isotope of oxygen we are using for photosynthesis, the amount of the food produced will be more or less same in case of every isotope.
The oxygen isotope will get mixed in the soil of the plants and after the whole photosynthesis process is done. the oxygen is constituted in the plant as C₆H₁₂O₆ will would be further broken down into the form of o₂ and H₂O. These H₂O and O₂ will be released in the atmosphere as a final product of the complete photosynthesis.
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cecil is working with samples of chlorine (cl), oxygen (o), bromine (br), and silver (ag). the samples are all at room temperature. which substance is most likely the most dense?chlorineoxygenbrominesilver
Since the samples are all at room temperature, the substance which is most likely the most dense is: D. silver.
What is density?Density can be defined as a ratio of mass to the volume of a physical substance such as chlorine, oxygen, bromine, silver, etc.
Mathematically, the density of a physical substance can be calculated by using this formula:
D = M/V
Where:
D represents the density of a physical substance.M represents the mass of a physical substance.V represents the volume of a physical substance.At room temperature, the density of the given physical substances in an ascending order are as follows:
Oxygen = 1.49 g/LChlorine = 3.21 g/LBromine = 3100 g/LSilver = 10490 g/LIn this context, we can reasonably and logically deduce that silver is the most dense among the given physical substances.
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This passage is part of a report of a science
experiment.
The solution contains water and the unknown
second substance. The solution was heated
gradually, and it began boiling at 80°C. The
gas rose through a glass tube that led to a
cold flask. A clear, colorless liquid formed in
the flask.
What was the purpose of boiling the solution?
Select the words from the drop-down menus
to correctly complete the explanation.
The solution was boiled to Choose.. the
solution. Because water Choose.. boil at
80°C, the clear, colorless liquid that formed in
the flask must have been
Choose...
The temperature at which a liquid's vapour pressure equals the pressure around it and the liquid transforms into a vapour is known as the boiling point of a substance. A liquid's boiling point varies depending on the atmospheric pressure in the area.
A liquid partially vaporises into the space above it at any temperature up until the vapour pressure of the liquid at that temperature, which is a characteristic value. When a liquid reaches its boiling point, vapour bubbles form inside the liquid and rise to the surface as the temperature rises, increasing the vapour pressure.
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Answer the following questions about one molecule of glucose, C6H12O6.
(a) How many different elements are in the molecule? _____
(b) How many atoms of oxygen are in the molecule? _____
(c) What is the total number of atoms in the molecule? _____
Group of answer choices
24; 6; 1
3; 6; 6
3; 6; 24
3; 1; 4
Answer:
a)3
b)6
d)24
option c
4. Which of the following organic molecules are isomers?
A. CH3CH₂CH₂CH3
B. CH3CHCH3
|
. CH3
CH3
|
C. CH3-C-CH3
|
CH3
D. CH3CH=CH₂
CH3
|
E. CH-C- CH3
|
CH3
F. CH3\
C=CH
CH3/
G. CH₂ - CH₂
| |
CH₂ - CH₂
The following organic molecules are isomers CH3CH₂CH₂CH3. Option A.
All organic compounds have isomers. Isomers mean that they have the same molecular formula but different configurations. The connectivity of a connection ultimately determines its functionality. For example, the same molecular formula can be used to identify alcohols or ethers.
Isomers are molecules that have the same molecular formula but differ in the arrangement of their atoms in space. This excludes all other configurations by rotating the molecule as a whole or around specific bonds. In organic chemistry, isomers are molecules that have the same molecular formula but differ in the structural or spatial arrangement of the atoms within the molecule.
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4. If an airplane is flying at a constant speed of
500 km/h, can it be accelerating? Explain.
Hi
Answer:
No, it cannot be accelerating.
Explanation:
The question explicitly states that the airplane is flying at a constant speed, meaning that its speed is not changing (not accelerating or decelerating).
Oxford Languages definition of constant:
a quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions.
Answer:
No, as acceleration means increasing speed but the airplane is flying with a constant speed which means there is no increase or decrease in speed
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What is the density of an unknown metal that has a mass of 180.0 grams and a volume of 20.0 ml?
Density = Mass/Volume
Density (of the unknown metal) = 180/20
Answer: 9 grams/mL
Butyric acid is responsible for the foul smell of rancid butter. the pkb of the butyrate ion is 9.16. (a) calculate the ka for butyric acid. (b) calculate the ph of a 0.075 m solution of butyric acid. (c) calculate the ph of a 0.075 m solution of sodium butyrate.
The acid dissociation constant for butyric acid is 0.0000145, pH value of its 0.075 M solution will be 2.98, and the pH value of 0.075 M solution of sodium butyrate will be 8.86.
a) The negative logarithmic values of the acid dissociation constant (Ka) for the acid and the base dissociation constant for the conjugate base (Kb) are always 14 in total:
pKa (acid) + pKb (conjugate base) = 14 ⇒ pKa = 14 - pKb
pKa = 14 - 9.16
pKa = 4.84
This means that the Ka for butyric acid is:
[tex]K_{a} = 10^{-4.84} = 1.45 * 10^{-5}[/tex]
b) The expression for butyric acid (HA) acid dissociation constant will look like this:
[tex]K_{a} = \frac{[H^{+} ][A^{-} ]}{[HA]} = \frac{X^{2} }{0.0075 - X}[/tex]
When transformed, this expression gives us a quadratic equation:
X² + Ka * X - 0.075 * Ka = 0
With familiar Ka, when we solve for X, we get:
X = 0.0010356 M = [H+]
We can use this to calculate the pH value of the solution:
pH = -log[H+]
pH = -log0.0010356
pH = 2.98
c) The expression for butyrate basicity will look like this:
[tex]K_{b} = \frac{[OH^{-} ][HA ]}{[A^{-} ]} = \frac{X^{2} }{0.0075 - X}[/tex]
When transformed, this expression gives a quadratic equation:
X² + Kb * X - 0.075 * Kb = 0
With familiar Ka, when we solve for X, we get:
X = 0.0000072 M = [OH-]
pOH = -log[OH-]
pOH = -log0.0000072
pOH = 5.14
pH = 14 - pOH
pH = 14 - 5.14
pH = 8.86
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The atomic theory describes _____ because ____, ___ and ____
Atomic theory shows a ____, because ___,___,___
The atomic theory describes Dalton's theory because electron, proton and neutron.
The first a part of his theory states that every one matter is product of atoms, which might be indivisible. The second one part of the concept says all atoms of a given element are equal in mass and houses. The element says compounds are combos of two or extra distinctive forms of atoms.
One of the maximum essential merits of Dalton's atomic idea is the truth that the idea does no longer violate numerous fundamental laws of chemical combination consisting of the regulation of precise proportions, the regulation of multiple proportions, and the regulation of conservation of mass.
In 1803 Dalton located that oxygen mixed with both one or volumes of nitric oxide in closed vessels over water and this pioneering remark of fundamental more than one proportions supplied vital experimental proof for his incipient atomic thoughts.
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How does Nanoparticles in Medicine relate to quantum numbers
Using particles that are intended to adhere to specific cells, injured cells can be treated directly. Early disease detection is made possible by this technique, which also causes less damage to the body's healthy cells.
What medical use do nanoparticles have?
Medicine can now be included in nanoparticles the size of viruses thanks to modern research. Because they can locate damaged cells with extreme precision and administer the medication there, nanoparticles are effective for drug delivery—the administration of the medication to the body.
In the body, nanoparticles are active The epidermis, lining of the lungs, or lining of the intestine are some of the exterior layers of the body through which nanoparticles can enter. The specific physical and chemical characteristics of the particle will determine how successfully they migrate from the outside to the inside
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Chemistry full in the blanks, this is urgent
1. Atomic number is the relative atomic in an atom.
2. Mass number is the number of protons and neutrons in an atom
3. Isotopes are atoms with the atomic same but different mass due to the neutrons number of neutrons in the nucleus.
Atoms of many elements are in the form of molecules or ions because they are the most reactive. Examples are hydrogen oxygen chlorine and other elements. However non-reactive atoms of certain elements exist in nature in a free state. The relative atomic mass of an element is defined as the weight in grams of the number of atoms of that element in 12.00 grams of carbon-12.
The atomic mass of an element is the average mass of the atoms of the element measured in atomic mass units AMU, also known as Dalton D. Atomic mass is the weighted average of all isotopes of that element, the mass of each isotope multiplied by the abundance of that particular isotope. It is the ratio of the average atomic mass of the element from a single specific sample or source to the mass of the carbon-12 atom.
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consider the following reaction for the decomposition of hi at a certain temperature 2hi(g) --> h2(g) i2(g) the average rate of disappearance of hi over the period from t
Chemical decomposition, also known as chemical breakdown, refers to the process or effect of breaking down a single chemical entity (normal molecule, reaction intermediate, etc.) into two or more fragments. The chemical breakdown is commonly thought of and characterized as the inverse of chemical synthesis.
The mechanics of a decomposition process are not usually fully defined, although some of the processes are understood; breaking bonds requires a lot of energy. Because all decomposition processes break down the bonds that keep it together in order to produce simpler basic parts, the reactions would all require some form of this energy to varying degrees. As a result of this fundamental rule.
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Organisms in overpopulated areas do not survive well due to what
Organisms in over-populated areas do not survive well due to reduction in available food and shelter.
An unsustainable population within a specific area or habitat is referred to as overpopulation. A higher birth rate, a lower death rate, migration to an area of the ecosphere where there are fewer predators, or a rapid fall in the amount of resources available are all causes of overpopulation. Overpopulation thus refers to a situation when a population in a particular ecosystem depletes the resources necessary for subsistence or survival.
Overpopulation typically causes ecological disruption due to resource depletion. Other populations who compete for the same resources may experience a decline as a result of this disruption.
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bond that forms between charged ions
A.carbon-14
B.covalent
C.ionic
Answer: Ionic Bond
Explanation: They form when the cation and the anion have opposite charges, and attract each other
How is the protein in the milk useful for the animal that produces the milk?
All nine of the necessary amino acids that humans need are present in milk proteins.
Although the mammary gland produces the proteins in milk, 60% of the amino acids needed to make those proteins come from the cow's diet. So the milk from cows may also provide us with protein.
Why are dairy cows dependent on protein?The dairy cow needs proteins for a variety of metabolic processes, including growth, lactation, and reproduction. The dairy cow needs proteins for a variety of metabolic processes, including growth, lactation, and reproduction. Crude protein is a popular term used to describe the protein content in feed (CP).
All elements of bodily health, reproduction, and most critically milk production in the dairy business depend on protein. The protein that the cow consumes may be divided into two types: rumen degradable protein (RDP) and rumen undegradable protein (RUP).
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examine the following equation: 23490th→23491pa 0−1e γ90234th→91234pa −10e γ which type(s) of radiation are produced in this reaction? responses beta and gamma beta and gamma, , alpha and beta alpha and beta, , beta beta gamma gamma alpha alpha alpha and gamma alpha and gamma, ,
Radiation produced in the given reaction is beta and gamma.
Describe radiation.
Radiation is defined as a source of energy or particles that pass through the atmosphere or other media. Radiation includes microwaves and radio waves utilized for wireless communication as well as light and heat. The term "radiation" refers to energetic particles and electromagnetic waves that some materials emit.
How does gamma radiation work?A stream of extremely energetic electromagnetic radiation known as gamma rays or gamma radiation is released by an atomic nucleus that is going through radioactive decay.
What kind of radiation is beta radiation?Beta Radiation Free electrons or positrons moving at relativistic speeds make up beta radiation. The term "beta particles" refers to these entities. Beta particles are high-energy, high-speed electrons or positrons released by some fission fragments or by some primitive radioactive nuclei, such as potassium-40.
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Which element would an alien with ten mouths need? ( hint: group 6)
The element which an alien with ten mouths need is Tungsten ( W ).
Understanding the chemical element " Tungsten "Tungsten is an element in the periodic table which belongs to group vi. It is a transition metal. Transition metals has the ability to form complex ions. Alien such as those with ten mouths need tungsten for sustenance.
An element is a substance which cannot be split into smaller forms by ordinary process. The element in the periodic table are structured into groups and periods. The vertical arrangements of chemical elements in the periodic table is the group while the period is the horizontal arrangements.
Chemical elements are also classified as metals, nonmetals and metalloids.
So therefore, tungsten is needed by aliens.
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Matter that can be described as "uniform" or "continuous" is
While heterogeneous matter (from the Greek hetero = different) suggests non-uniformity and discontinuity, homogeneous matter (from the Greek homo = same) can be thought of as being uniform and continuous.
What is an example of a homogeneous matter?Materials that are homogeneous lack borders, are uniform throughout, and have all of its component elements in the same state. Homogeneous mixtures also include air we and the water we drink from the faucet. Quality is related are also alluded to as solutions.
What is homogeneous matter?Whether a mixture is solid, liquid, or gaseous, homogeneous mixtures have the same ratios of their component parts throughout a particular sample. Its composition remains the same throughout. There is just one visible phase of substance in a homogeneous combination.
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During chemiosmosis, hydrogen ions accumulate in the ______ of the mitochondrion to create a large electrochemical gradient for aerobic cellular respiration.
During chemiosmosis, hydrogen ions accumulate in the ATP formation of the mitochondrion to create a large electrochemical gradient for aerobic cellular respiration.
What is on aerobic respiration?a chemical reaction that converts carbohydrates into energy using oxygen (sugars). also known as oxidative metabolism, aerobic metabolism, and cell respiration.There are two varieties of breathing: The process of aerobic respiration occurs when there is oxygen present. Absence of oxygen results in anaerobic respiration.All cellular activities are powered by energy produced by aerobic respiration. The processes result in the production of ATP, which is subsequently utilized to power other life-sustaining processes like growth, repair, and maintenance.To learn more about : aerobic respiration
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5. it is a part of the brain that regulates balance and motor skills
6. it is referred to as chewed food
7. it is small- air -containing compartment of the lungs where gas exchange occurs.
8. it is the wavelike muscular contractions of the esophagus
9. it is a point where two bones joints
10. it is a kind of neuron that connects sensory and motor neurons
Choices (all same choices) :
a. melanin b. peristalsis c. Vitamin C d. interneuron e. alveolus f. cerebellum g. joint h. bolus
Answer:
5. F
6. H
7. E
8. B
9. G
10. D
Explanation:
Most of these could have just been looked up online or could've used context clues based on the name. If they are vocab words make sure to memorize them.
when 2.36 g of a nonvolatile solute is dissolved in 100 g of solvent, the largest change in freezing point will be achieved when the solvent is when 2.36 g of a nonvolatile solute is dissolved in 100 g of solvent, the largest change in freezing point will be achieved when the solvent is water, kf
The largest change in freezing point will be achieved when the solvent is tert-butanol, and Kf = 9.1.
What is freezing point?
The temperature at which a liquid turns into a solid is known as the freezing point. Similar to the melting point, the freezing point typically rises with increasing pressure. In the case of combinations and for some organic substances, such as lipids, the freezing point is lower than the melting point.
Concept of colligative property is applied here.
In this case, particularly freezing point depression.
The formula is for this is:
[tex]\delta T = K_f \times m \times i[/tex]
When we add particles of a certain solute, freezing point of a solution becomes lower than the pure solvent.
i = Van't Hoff factor (ions particles that are dissolved in the solution)
In this case, the solute is nonvolatile, so i values 1.
δT = Difference between fusion T° of pure solvent - fusion T° of solution.
T° fusion paradichlorobenzene = 56 °C
T° fusion water = 0°
T° fusion tert-butanol = 25°
Water has the lowest fusion temperature and the paradichlorobenzene has the highest Kf. But the the tert-butanol, has the highest Kf so this solvent will have the largest change in freezing point, when all the concentrations are the same.
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why do substances exist in liquids solids or gasses
Matter exists in different states such as solid, liquid and gas because of the kinetic energy of its particles and the intermolecular force of attraction between the particles.
A substance won't condense into a liquid or solid if the average kinetic energy is higher than the attraction forces holding the particles together.
Thus in solids, intermolecular force of attraction > kinetic energy of particles.
In a liquid (or solid), the average kinetic energy of the particles is low enough to allow the forces of attraction to hold the particles together. In a liquid (or solid), molecules do not separate.
In liquids, intermolecular force of attraction > kinetic energy of particles. But this force of attraction is smaller than solids.
The forces of attraction between the particles in a gas can be overcome by the average kinetic energy of the particles in the gas. When gas molecules collide, they spread apart.
In gas, intermolecular force of attraction < kinetic energy of particles.
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7. How does the density of water compare with the density of the saturated salt solution?
Is this what you would have predicted?
We can see that the density of the water is less than the density of the saturated salt solution from the table shown above.
What is density?The term density is defined as the ratio of the mass to the volume of an object. In this case, we can see that we are trying to compare the density of water and the density of a salt solution. We have to recall that when we dissolve a solute in a solvent, the density of the solution would change to reflect that we no longer have a pure solvent.
This is because, the density of a substance is an intrinsic property thus it then depends on the nature of the substance and not on the amount of the substance.
Thus, we can see that when we dissolve the salt in the water, the density of the water is increased. Thus water has a density of 1 g/mL while a saturated salt solution has a density of 1.12 g/mL.
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During the determination of molar mass of co2 experiment, suppose you measure the atmospheric pressure of the lab as 752 torr and the temperature of the lab as 21°c. If the vapor pressure of water is 18. 65 torr at 21°c, what is the pressure, in atm, of the co2 collected?.
The pressure (in atm) of the carbon (IV) oxide, CO₂ gas collected, during the given experiment is 0.965 atm
How to determine the Pressure (in atm) of CO₂We'll beging by obtaining the pressure (in torr) of the carbon (IV) oxide, CO₂ gas collected. This can be obtained as follow:
Pressure of lab = 752 torrVapour pressure of water at 21 ° C = 18.65 torrPressure of CO₂ = ?Pressure of CO₂ = (Pressure of lab) - (Vapour pressure of water at 21 ° C)
Pressure of CO₂ = 752 - 18.65
Pressure of CO₂ = 733.35 torr
Finally, we shall convert 733.35 torr to atm as illustrated below
We know that:
760 torr is equivalent to 1 atm
Therefore,
733.35 torr will be equivalent = (733.35 torr × 1 atm) / 760 torr
733.35 torr = 0.965 atm
Thus, from the above calculations, we can conclude that the pressure (in atm) is 0.965 atm
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Need help ASAP (periodic table, 50 pts, just fill in left to right)
Answer:
you wont ever get this one but ok
Explanation:
lol
What is the mass of this element? *
15 30.974
P
Phosphorus
P is the symbol for the element phosphorous. It has an atomic mass of 30.974 and an atomic number of 15.
What is phosphorus?The chemical element phosphorus has the atomic number 15 and the letter P in its name. Phosphorus (P), a nonmetallic chemical element of the nitrogen family (Group 15 [Va] of the periodic table), is a colorless, semitransparent, soft, waxy solid that glows in the dark. It appears to exist in two main forms: white phosphorus and red phosphorus. However, due to its high reactivity, phosphorus is never found on Earth as a free element. Phosphorus is a nonmetallic allotrope element found in living things and phosphates. The red form of phosphorus is less reactive and harmless and is used in alloys, matches, and insecticides. Ordinary phosphorus is a poisonous, combustible, and phosphorescent white solid.
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Which option contains a true statement about cell theory?
O Louis Pasteur did an experiment that proved new cells come from the rotting remains of organisms.
Theodor Schwann did an experiment that proved new cells come from the rotting remains of organisms.
Louis Pasteur did an experiment that proved new cells come from existing, living cells.
Theodor Schwann did an experiment that proved new cells come from existing, living cells.
Anatomist and physiologist Theodor Schwann is best known for formulating the cell doctrine, which holds that all living things are made up of cells.
What is meant by cell theory?Theodor Schwann put forth the classical cell theory in 1839. This theory consists of three parts. All organisms are composed of cells, according to the first section. The basic building blocks of life exists cells, according to the second section.
Anatomist and physiologist Theodor Schwann is best known for formulating the cell doctrine, which holds that all living things are made up of cells. He proved that the cell is the fundamental building block of all living things.
All known living things are composed of one or more cells, according to the modern cell theory. By dividing, pre-existing cells become all living cells. All living things have cells as their basic unit of structure and operation.
Therefore, the correct answer is option d) Theodor Schwann did experimentation that demonstrated new cells come from existing, living cells.
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