The solubility of MgCO3 in water will increase if 0.1m HNO3 is added to the solution at 298k.
Magnesium carbonate (MgCO3) is basic in nature and insoluble in water but when 0.1m HNO3 (acidic) is added the MgCO3 will dissociate due to the opposite nature that is MgCO3 is basic and HNO3 is acidic. This will lead to an increase in solubility. The balanced equation of this reaction is:
MgCO 3 (s) + 2 HNO 3 (aq) → Mg(NO 3) 2 (aq) + CO 2 (g) + H 2O (l)
The equilibrium constant for the dissolution of a solid substance into an aqueous solution is the solubility product constant. Ksp is used to represent it.
A type of equilibrium constant, the solubility product's value changes with temperature. Due to increasing solubility, Ksp often rises as temperature rises.
A substance's ability to dissolve in a solvent to create a solution is known as a substance's solubility. Ionic compounds, which separate into cations and anions, have a wide range of solubilities in water. While other substances are exceedingly insoluble, some are highly soluble and may even absorb moisture from the air.
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Electronic configuration An element's atomic number tells you the number of _______________ in the nucleus. The number of in an atom is equal to the number of In the first shell of an atom there are shell there are_______ electrons. In the third shell there are electrons. electrons. In the second
Answer:
Electronic configuration An element's atomic number tells you the number of protons in the nucleus. The number of protons in an atom is equal to the number of electrons. In the first shell of an atom there are 2 electrons. In the third shell there are 18 electrons.
how do the different organ systems work together to achieve a holistic and healthy body?
Answer:
Just as the organs in an organ system work together to accomplish their task, so the different organ systems also cooperate to keep the body running. For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce.
Explanation:
For mn3 , write an equation that shows how the cation acts as an acid.
Equation showing the Mn³⁺ cation acting as an acid:
Mn³⁺+ H₂O → MnOH²⁺ + H⁺
A cation is a positively charged ion in a metal element whose formation is carried out by releasing one or more electrons from its outermost electrons to achieve stability.
The intermediate reaction is an acid-base reaction. Acid-base reactions generally produce salt and water. However, in this reaction what is formed is an anion and a conjugate acid-base cation because it uses the Bronsted-Lowry acid-base principle. Mn³⁺ acts as an acid so that it donates a proton MnOH²⁺ to H⁺ so that the species formed are MnOH²⁺ and H⁺.
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if the reaction tube is washed with water but not dried thoroughly, what side product is formed (draw the reaction in pen and name the product)?
In a Grigmand reaction experiment, all the glass wake washed are complete without water druplet and dried leaving a single aIf it's not dried properly I molecules properly I water Hem aims im tube then this water as am acid the test molecule acts.
We realize Grignard reagents are robust bases one hundred twenty acts as an acid wherein. An or by derivative is a secondary by-product derived from a production system, manufacturing manner, or chemical reaction it is not the primary service or by-derivative being produced. facet products are impurities that appear throughout the response because of aspect reactions that may be opportunity response pathways or similar reactions.
An aspect reaction is a chemical response that occurs at an equal time as the actual foremost response, however to a lesser volume. It results in the formation of. A facet reaction is a reaction that produces a distinct spinoff aside from the preferred derivative. It happens concurrently with the principal reaction but to a lesser extent. for instance, when phenol is reacted with nitric acid the main reaction is the formation of o-nitrophenol.
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How many molecules are found in 25.00 moles of Sucrose Sugar, or C12H22O11?
Taking into account the definition of Avogadro's Number, 1.50575×10²⁵ molecules are found in 25.00 moles of Sucrose Sugar.
Avogadro's NumberAvogadro's number is currently defined as the number of atoms in 12 grams of carbon-12 and its known approximate value is 6.023×10²³.
In other words, Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance.
Amount of atoms in 25.00 moles of Sucrose Sugar
You can apply the following rule of three: if by definition of Avogadro's Number 1 mole of sucrose sugar contains 6.023×10²³ molecules, 25 moles of the compound contains how many molecules?
amount of molecules of sucrose sugar= (25 moles × 6.023×10²³ atoms)÷ 1 mole
amount of molecules of sucrose sugar= 1.50575×10²⁵
Finally, in 25.00 moles of Sucrose Sugar are present 1.50575×10²⁵ molecules.
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if the reaction between nitrogen gas and oxygen gas to produce nitric oxide has a 92% yield, what is the actual yield (in mg) when 5.0 g of nitrogen gas is completely consumed?
The actual yield is 9.9, which is 92 percent of the theoretical yield of 10.7. As a result, since the reaction only produces 92 gas because it is only 92 percent efficient, obtain 9.9 gas of the product instead of 10.7 milligrams.
How can I get my body to produce more nitric oxide?You can increase your body's natural release of nitric oxide by eating a diet rich in nitrate-rich foods and antioxidants, taking supplements like L-arginine or L-citrulline, or both. Other effective methods include reducing mouthwash use and engaging in regular exercise.
What results from excessive nitric oxide levels?Methemoglobinemia can be quickly and powerfully induced by nitric oxide. In addition to pulmonary edema, pneumothorax, bronchitis, bronchial asthma, emphysema, and perhaps methemoglobinemia, radiation to nitrogen oxides can alter the pulmonary system. After some time, a cough, hyperpnea, and distress may be observed.
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Please help!!
(this is Rutherford's Black box experiment and atoms)
- please answer all the questions in full sentences :D
- do not answer "i'm not sure" on here.
1) Suppose the marble usually rolled right to the end of the box without bouncing off anything, what would this tell you about the size of the targets?
2) What conclusions did Rutherford draw from his data and how did the data change the model of the atom?
3) Niels Bohr was a student of Rutherford, Bohr's work went on to modify the atomic model even more. What changes did Bohr make to advance our understanding of the atom?
1) Suppose the marble usually rolled right to the end of the box without bouncing off anything, what would this tell you about the size of the targets?
That the target is very small, they do not take up much space in the box. The target represents the gold nuclei in the Rutherford experiment, and thus is relatively small.
2.) What conclusions did Rutherford draw from his data and how did the data change the model of the atom?
A large majority of the alpha particles went through the gold foil, but some got deflected back. At the time, it was presumed that an atom was a sphere with the same charge all around. If some but not all the particles were being reflected back, this meant that the positive charge in the atom must be very concentrated- ie. in the center known as a nucleus. This changed the atomic model from the plum pudding model (negative electrons among large positive sphere) to the nuclear model (Mass of atom is in the nucleus with electrons orbiting around). (As in image below)
3) Niels Bohr was a student of Rutherford, Bohr's work went on to modify the atomic model even more. What changes did Bohr make to advance our understanding of the atom?
Instead of random orbits that Rutherford predicted, Bohr proposed specific atomic orbitals. He explained that there are orbital levels around the nucleus and that this is where electrons are. He said that electrons can move up energy levels by adding energy, and move down by releasing energy. These orbitals are what is shown in the Bohr Model.
Hope this helps!
In which of these statements are protons, electrons, and neutrons correctly compared?
Quarks are present in protons and neutrons but not in electrons.
Quarks are present in protons, neutrons, and electrons.
Quarks are present in neutrons and electrons but not in protons.
Quarks are present in protons and electrons but not in neutrons.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. The correct option is option A.
What is atom?Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.
Quarks are present in protons and neutrons but not in electrons. Quarks are sub-atomic particles that have mass, but not an integer of charge.
Therefore, the correct option is option A.
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viral symmetry that is both icosahedral and helical and possibly other symmetry is collectively referred to as
viral symmetry that is both icosahedral and helical and possibly other symmetry is collectively referred as complex.
what is symmetry?
Chemistry terms like "molecular symmetry" refer to the symmetry that exists in molecules as well as how they are categorised. As it may be used to predict or explain many of a molecule's chemical characteristics, including its dipole moment and its permitted spectroscopic transitions, molecular symmetry is a key concept in chemistry.
An action that results in an object's appearance remaining unchanged is known as a symmetry operation. For instance, a water molecule will retain its original appearance if it is rotated by 180 degrees around an axis that runs through the centre O atom (located in the middle of the two H atoms). Each symmetry operation has a corresponding symmetry element, which can be an axis, a plane (2 dimensions), a line (1 dimensions), or a point (0 dimensions), with regard to which the symmetry operation is performed
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during secondary active transport the movement of one susbtance down it's electronchemical gradient provides the force to move antoher substance up. both substances move in the same diection the mechanism is referered to as
During secondary active transport the movement of one substances down it's electrochemical gradient provides the force to move another substance up. both substances move in the same direction the mechanism is referred to as symport.
The secondary active transport the movement of one substances . the movement depends on the two types : symport and the antiport. An antiport is the substance move in opposite direction in symport the substance move in same direction
Thus, During secondary active transport the movement of one substances down it's electrochemical gradient provides the force to move another substance up. both substances move in the same direction the mechanism is referred to as symport.
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Choose the nonmetallic elements from the list. Check all that apply.
Oyttrium
oxygen
boron
Opolonium
argon
gallium
carbon
what type of evidence have scientists collected and studied from deep ice cores that shows a correlation between changes in global climate with methane and carbon dioxide levels?
A correlation between changes in global climate with methane and carbon dioxide levels is Variations in ice layer color and thickness.
Ice cores provide direct information about how greenhouse gas concentrations have changed in the past, and also provide direct evidence that climate can change rapidly. By examining the gas trapped in the ice core, scientists learned the amount of carbon dioxide for the first time.
Global temperature has been associated with at least the last million years of Earth's history. A particularly powerful correlation technique is to use the composition of atmospheric gases trapped in ice bubbles. Since most gases remain in the atmosphere long enough to be well mixed on a global scale, ice cores around the world simultaneously exhibit the same atmospheric composition with trapped gas bubbles.
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given that the principal quantum number is n, the number of orbitals in each principal energy level is given by the expression .
The formula 2n², where n is the primary energy level, can be used to calculate the maximum amount of electrons in each energy level (first quantum number).
Where are the orbitals?The nucleus is the center of the orbits. One orbital will be larger than the others if an atom has several orbitals, or they will overlap. Additionally, an atom is perhaps most likely to occur in the electron shells. Orbitals, or groups of electrons arranged in a cloudlike pattern, surround the nucleus.
What shape do orbitals take?The highest level of probability for an electron to exist is in an atom's nucleus. The route that electrons travel while navigating the restrictions of the circle is referred to as a subshell. There are four different subshell classifications. The letters s, p, d, & f are used to identify the such.
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how do you write a chemical equation for a chemical reaction
The ways to write a chemical equation for a chemical reaction are:
Determine the reactant and product types.Each of the reactants and products should have a chemical formula, so write it down.Find out how many of each kind of atom there are in the reactants and products.Equilibrate the variables (Balance the equation)What is the term chemical reaction?
In a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, By inhaling oxygen, which then combines with glucose to produce carbon dioxide, water, and energy, we are able to breathe. The response is provided below. C6H12O6 + O2 = 6CO2 + 6H2O + Energy.
Note that Reactants are the substances that are changing and are written on the left-hand side of the equation. Products are the newly produced substances.
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4
How do you write 880% as a fraction, mixed number, or whole number?
Submit
Explanation:
a fraction 880/1000 or 22/25
mixed number 44/5
whole number 8
which of the following carbonate compounds is soluble in water? select the correct answer below: ag2co3 caco3 (nh4)2co3 pbco3 feedback
Alkali carbonates are soluble in water so (NH₄)2CO₃ sodium carbonate and potassium carbonates are soluble in water.
What is compounds and examples?A composite is a material comprised of two or more constituent parts. Examples of molecules are carbon dioxide, freshwater, and table salt. a substance produced by the chemical joining of two or three dissimilar components. Examples of compounds are salt (NaCl), which is made up of chloride and sodium atoms, and water (H2O), which would be made up of hydrogen and oxygen atoms.
How are compounds formed?When a group of atoms unite to form a pure material, a compound is created. These can be reduced to their individual atoms. Atoms from the reactants interact during chemical reactions to create new compounds. Reactants are the species that are reacting, while products are the results of the reaction.
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the solubility of n2 gas in blood is 6.1e-4 when the partial pressure of n2 gas is 1 atm and the temperature is 37 c if a scruba diver breathes compressed air with a total air pressure of 3 atm what is the solubility of n2 in her blood
The partial pressure of nitrogen gas is 1.43 x 10^-3 M to be exact, but we can also consider it as 1 atm.
Partial pressure can be defined as- if a container filled with more than one gas, each gas exerts pressure. The pressure of anyone gas within the container is called its partial pressure.
As we know, pressure is the force per unit area. Partial pressure can be the pressure half-filled the area.
Ideal gas behavior allows gas mixtures to be specified simply. In particular, the ideal gas law holds for each component of the mixture separately. Each component exerts its own pressure referred to as its partial pressure.
Partial pressure is the measure of the thermodynamic activity of gas molecules. The gasses diffuse and react based on their partial pressures and not concentrations in a gaseous mixture.
Complete question: -
The solubility of N2 gas in blood is 6.10 x 10^-4M when the partial pressure of N2 gas is 1.00 atm and the temperature is 37-degree C. If a scuba diver breathes compressed air with a total air pressure of 3.00 atm, what is the solubility of N2 in her blood?
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It is necessary in certain types of experiments to begin by heating a crucible to constant mass. Identify the steps in this process.
Certain types of experiments must begin by heating a crucible to constant mass. The steps in this process are stated below:
Crucible is heated using a Bunsen burner for several minutes.The crucible is allowed to cool down.The mass of the crucible is being measured.Steps 1 to 3 is being repeated as much as needed to obtain a constant value.What is the purpose of heating a crucible?Heating a crucible is very crucial to maintain the measurement as thoroughly as possible. The porcelain crucibles are hygroscopic as they absorb weighable moisture from the air. We could get rid of moisture as much as possible by heating it.
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the average atomic mass between the two isotopes is 63.546 amu. calculate the relative atomic mass of 65 cu
The mass of the 65Cu isotope can be determined using the formula below. - To obtain the mass of the 65Cu isotope, replace all the known values in the formula above. - The mass of the 65Cu isotope is therefore 64.9233 amu. So, "Option C" is the right response.
Average atomic mass of copper=63.546 amu
On putting given values we get:
63.546= 100
62.9298 ×69.09+M
2 ×30.91
on solving we will get mass of 65
Cu isotope =64.9233
What is Atomic Mass ?The total mass of an atom is made up of all of its protons and neutrons.
"Isotopes" is the name used to describe atoms having differing atomic weights caused by various neutron counts. The protons in isotope elements are the same, but the neutron content varies.
The total mass of the protons and neutrons in an atom's nucleus is known as its atomic mass. With 6 protons and 7 neutrons in its nucleus, this carbon isotope has a 13-atom mass, or 7+6=6. It has an atomic mass of 13 mass units. (amu).
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Zn(s)+HNO3(aq)⟶Zn(NO3)2(aq)+H2(g)
Express your answer as a chemical equation. Identify all of the phases in your answer. Keep the order of compounds as in the original equation.
Start by assigning oxidation numbers to the atoms that take part in the reaction.
notice that the oxidation state of zinc changes from zero on the reactants' side to +2 on the products' side, which means that it is being oxidized.
Now take a look at nitrogen's oxidation state. Notice that some nitrogen atoms keep their oxidation state constant, i.e. +5 on both sides of the equation, but that other nitrogen atoms change their oxidation state from +5 to -3, which implies that they are being reduced. Balance the nitrogen atoms first by multiplying the nitric acid by 2. Since you're in acidic solution, you can balance the hydrogen atoms by adding protons,
H
+
, to the side that lacks hydrogen, and oxygen atoms by adding water molecules to the side that lacks oxygen.
Since you only need to balance the hydrogen atoms present on the reactants' side.
Hope that can start you off! And hope that helps!
The balanced chemical equation of the given reaction is written as follows:
[tex]\rm Zn(s)+2HNO_3(aq) \rightarrow Zn(NO_{3})_2(aq)+H_2(g)[/tex]
What is a balanced chemical equation?A balanced chemical equation is a symbolic representation of a chemical reaction that shows the exact number of atoms of each element present in both the reactants and the products.
In a balanced equation, the total number of atoms of each element on the reactant side of the equation must be equal to the total number of atoms of that element on the product side of the equation.
This ensures that the law of conservation of mass is upheld, which states that matter cannot be created or destroyed in a chemical reaction, only rearranged.
The balanced chemical equation is written above.
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Chromium (Cr) can combine with chlorine (Cl2) to form chromium chloride (CrCl3).
Which equation is a correct representation of this reaction?
Responses
2Cr + Cl2 → CrCl3
2 upper case C lower case r plus upper case C lower case l subscript 2 end subscript rightward arrow upper case C lower case r upper case C lower case l subscript 3 end subscript,
Cr + Cl2 → CrCl3
upper case C lower case r plus upper case C lower case l subscript 2 end subscript rightward arrow upper case C lower case r upper case C lower case l subscript 3 end subscript,
2Cr + 3Cl2 → 2CrCl3
2 upper case C lower case r plus 3 upper case C lower case l subscript 2 end subscript rightward arrow 2 upper case C lower case r upper case C lower case l subscript 3 end subscript,
2Cr + 3Cl2 → CrCl3
The combination of the chlorine and the chromium species is designated by the reaction [tex]2Cr + 3Cl_{2} ------- > 2CrCl_{3}[/tex]. Option B
What is the correct representation?We know that the term reaction has to do with the way in which two atoms are combined in a compound. Now, the reaction must be balanced. This implies that the number of atoms on the reactant side must be the same as the number of atoms on the products side.
We are talking about how to write the reaction between the chromium atom and the chlorine atom. We know that we have to find out which of the reaction is balanced and that is; [tex]2Cr + 3Cl_{2} ------- > 2CrCl_{3}[/tex]
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a student performing the qual group 1 and 2 unknown analysis did not have any precipitate remaining after step 1-a. what steps should the student omit from the procedure? explain your answer.
In qualitative analysis, the student should omit the steps 1B-1E which leads us to omitting steps which involves the presence of Pb and Ag.
What is qualitative analysis?
In qualitative analysis, information that is non-numerical about a chemical species, a reaction, etc. are determined. Qualitative analysis is not a reliable analysis but it often easier, faster and is a lot cheaper to perform that the quantitative analysis. Qualitative Analysis deals with the grouping or identification of elements present in the sample. It is a standard procedure to classify the methods in two classes and those are qualitative inorganic analysis and qualitative organic analysis.
Hence, In qualitative analysis if there is no precipitate, student should omit the step 1B-1E.
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The student should omit steps 1B through 1E, which leads us to omit steps involving the presence of Pb and Ag, when performing a qualitative analysis.
What is qualitative analysis?
Qualitative analysis is used to determine non-numerical information about a chemical species, a reaction, etc. Although qualitative analysis is less accurate than quantitative analysis, it is frequently quicker, simpler, and much less expensive to conduct. The grouping as well as identification of elements found in the sample is the focus of qualitative analysis. The methods are typically divided into two categories: qualitative inorganic analysis as well as qualitative organic analysis.
Hence, In qualitative analysis if there is no precipitate, student should omit the step 1B-1E.
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As soon as you realize that you are in danger, you feel your heart speed up. You feel very aware of your surroundings. Your whole body is preparing to run or fight for your life. Which of the following would be the response of your nervous system?
A)heart rate speeds up
B)body moves to a safer place
C)senses become sharper so you are better able to respond
D)stress hormones are transported around the
Answer:
C would be the nervous system reacting
If you wanted to know about the other answers:
A and D are the circulatory system since it's transporting stress hormones through the blood and the heart rate speeds up
B is the muscular and skeletal system since they are the ones that make your body move
given the electronegativity values of c (2.5), n (3.0), o (3.5), and s (2.5), which of the following molecules have polar bonds? question 34 options: a) smog, no2 b) carbon dioxide, co2 c) sulfur dioxide, so2 d) all of the above e) none of the above
Given the electronegativity values of c (2.5), n (3.0), o (3.5), and s (2.5), The following molecules have polar bonds answer is all of the above.
There is bond between carbon and oxygen. So , bund is polar . since they have different electro negativities
The electronegativityes O' and s'are different. so, bond is polar and There is difference is electronegativityes between N and O, Sois polar bond.
When an atom of a certain chemical element forms a chemical bond, it has a propensity to draw shared electrons, which is denoted by the symbol, which stands for electronegativity. The atomic number of an atom and the separation of its valence electrons from the charged nucleus both have an impact on how electronegtive that atom is. The atom is more in need of an electron when the electronegativity is higher. o Electronegativity grows across a period from left to right. o The attraction of an atom on the electrons in a bonding pair is strongest when the valence shell is nearly full.
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7. What is the coefficient for phosphoric acid when the equation below is balanced?
KOH(aq) + H₂PO4(ag) → K3PO4(ag) + H₂O(1)
4
2
3
1
KOH(aq) + H3PO4(ag) → K3PO4(ag) + H₂O
the coefficient of the phosphoric acid from the above equation was 1
Explain about phosphoric acid ?
Phosphoric acid (orthophosphoric acid, monophosphoric acid, or phosphoric(V) acid) is a colourless, odorless phosphorus-containing solid and inorganic substance having the chemical formula H3PO4. It is most usually seen as an 85% aqueous solution, which is a colourless, odourless, non-volatile syrupy liquid. It is an important industrial chemical that is found in many fertilisers.
The compound is an acid. The phosphate ion PO 34 is formed when all three H+ ions are removed. The removal of one or two protons yields the dihydrogen phosphate ion H2PO - 4 and the hydrogen phosphate ion HPO 2 4, respectively. Phosphoric acid creates esters known as organophosphates.
The term "orthophosphoric acid" can be used to distinguish this acid from other "phosphoric acids," such as pyrophosphoric acid. Nonetheless, the word "phosphoric acid" refers to this particular molecule.
the balanced equation was
3 KOH(aq) + H₂PO4(ag) → K3PO4(ag) + 3 H₂O(1)
so the coeffecient of the phosphoric acid was 1
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The incomplete table below shows selected characteristics of gas laws.
Name
Variables
Constants
Equation
?
?
PV = k
Charles's law
?
V= kT
?
Temperature, pressure
?
P= kT
Combined gas law
Pressure, temperature, volume
?
?
Which constants would most likely be filled in the first row of the table?
O temperature and moles of gas
• volume and temperature
pressure and volume
O pressure and moles of gas
The complete table shows characteristics of gas law :
Variables constant Equation
Boyles law pressure , volume Temperature PV = k
Charles law volume ,temperature pressure V = kT
Gaylussac law pressure, temperature volume P = kT
combined pressure, temperature no. of moles PV = kT
gas law volume
1) The Boyles law states that : The pressure of the gas is inversely proportional to volume of gas.
P ∝ 1/V
PV = k
k is constant
2) The Charles law `states that at constant pressure the volume is directly proportional to temperature of gas.
V ∝ T
V = kT
3) The gay - lussac law states that at constant volume pressure is directly proportional to temperature.
P ∝ T
P = kT
4) The combined gas law is the combination of temperature , pressure and volume .
PV = kT
Thus, The complete table shows characteristics of gas law :
Variables constant Equation
Boyles law pressure , volume Temperature PV = k
Charles law volume ,temperature pressure V = kT
Gaylussac law pressure, temperature volume P = kT
combined pressure, temperature no. of moles PV = kT
gas law volume
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Answer:
The answer is A: temperature and moles of gas
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