the equilibrium of 2h 2 o(g) 2h 2 (g) o 2 (g) at 2,000 k has a k eq value of 5.31 x 10 -10 . what is the mass action expression for this system?
Answers
The mass expression for the system is K= (aH₂)² × aO₂ / (aH₂O)² = 5.31× 10⁻¹⁰.
First, we have to write a balanced chemical equation, i.e
2H₂O(g) ⇄2H₂(g)+O₂(g)
Now, from the above equation we can write mass action expression,
K= (aH₂)² × aO₂ / (aH₂O)² = 5.31× 10⁻¹⁰.
The mass action law provides simple method to write the expression for the equilibrium constant of any reaction. it is a universal law and applicable to all chemical reactions.
The ratio of the concentrations of the reactants and products is known as Equillibrium constant. It is represented as (K).
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Related Questions
Evaluate the specific rate constant for this reaction at 800°C. The rate-law expression is rate = k[NO]2[H2]. (Choose the closest answer.)
2NO(g) + 2H2(g) → N2(g) + 2H2O(g)
Experiment Initial [NO] Initial [H2] Initial Rate of Reaction (M•s−1)
1 0.0010 M 0.0060 M 7.9 × 10−7
2 0.0040 M 0.0060 M 1.3 × 10−5
3 0.0040 M 0.0030 M 6.4 × 10−6
a. 22 M−2•s−1
b. 4.6 M−2•s−1
c. 1.3 × 102 M−2•s−1
d. 0.82 M−2•s−1
e. 0.024 M−2•s−1
Answers
The specific rate constant for this reaction at 800°C is 1.3×\(10^2\).
The instantaneous rate of a reaction, or the reaction rate during a very brief period of time, can be calculated using differential rate equations. As it provides information on the reaction's instantaneous rate, it may be noticed that the ordinary rate law is a differential rate equation. The concentration of the reactants in a chemical reaction is expressed as a function of time by integrated rate equations. In order to determine how long it would take for a specific percentage of the reactants to be consumed in a chemical reaction, such rate equations can be used. It is significant to remember that integrated rate equations for reactions of various orders vary.
The specific rate constant is given by,
rate = K\([NO]^2\)\([H_2]\)
So,
K=\(\frac{rate}{[NO]^2[H_2]}\)
Now, put experiment 1 value, in the given equation
K=\(\frac{7.9\times10^{-7}}{(0.0010)^2(0.006)}\)
K=131.7
K=1.3×\(10^2\)
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Mrs. Hillis runs 5.6 miles every evening. How far does she run in feet? (5,280 ft = 1
mile)
Answers
Answer:
29565 feet
Explanation:
multiply 5.6 by 5280
Brainlist to who gets it right first
Which feature of the leaves is an adaptation for obtaining energy
A. Their short height
B. Their large size
C. Their pointed tips
D. Their unique shape
Answers
Answer:
B their larger size . this is right
Answer:
The answer is B. here is proof. Plz mark brainliest.
Explanation:
Best description with the middle east
Answers
List 3 characteristics of mechanical waves.
Answers
Answer:
transverse, longitudinal, and surface waves.
Explanation:
there you go
Question 1
Explain what geothermal energy is.
Answers
Answer:
geothermal energy is heat derived within the sub-surface of the earth
C5H12, pentane, is a liquid at room temperature.
Can we predict from this information whether C4H10, butane, will be a liquid at room temperature?
A)Yes, it will be a liquid since pentane is a liquid.
B)Yes, it will be a liquid since it contains 4 carbon atoms.
C)We cannot be sure unless we find out its boiling point.
D)We cannot be sure unless we get the boiling point of propane, C3H8.
Answers
Answer:
C)We cannot be sure unless we find out its boiling point.
Explanation:
It is necessary to clearly explain here that simply observing two compounds of the same homologous series irrespective of how close they may be in the series will not give us the faintest idea regarding which one will be a liquid, solid or gas at room temperature.
However, to determine whether an unknown substance will be a liquid at room temperature, then its important to measure its boiling point. If the boiling point is above room temperature, and the melting point is below room temperature, the compound is a liquid. If the boiling point of the unknown substance is below room temperature, it is a gas.
It is now safe to conclude that cannot decide on the state of matter in which a compound exists unless we know something about its boiling point, not merely looking closely at the properties of its neighbouring compounds in the same homologous series
Choose the COEFFICIENTS that balance the equation by the inspection method.
Answers
Answer:
somebody please help her or him please please
Which set of elements is in the order of decreasing/ increasing malleability? (Questions: 7 & 8)
Answers
Answer:the first answer is correct and 8 is O, Ge, Mn
Explanation:
What happens to the atoms/molecules of of a gas when heat is released
Answers
Answer:
When molecules are heated (absorb energy) they move faster – some, or all of the heat energy is converted to kinetic energy. So, when a gas is heated, the effect is to make the molecules move faster.
Explanation:
When you heat a gas, both its vapor pressure and the volume it occupies increase. The individual gas particles become more energetic and the temperature of the gas increases.
"Which type of reaction is used to measure immune complex formation almost immediately after reagent has been added by the amount of light scattered at a particular angle"
Answers
Answer:
nephelometry
Explanation:
Please mark as brainliest if this helped you
define noble gases ?
Answers
Answer:
The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore they rarely react with other elements since they are already stable
The air pressure at the top of Mount
Everest is about 199 mm Hg.
What is the pressure on Everest in
atmospheres?
[?] atm
Answers
The air pressure at the top of Mount Everest in atmospheres is equal to 0.2618 atm.
What is pressure?In Science, pressure can be defined as a measure of the force exerted per unit area of an object or physical body. This ultimately implies that, pressure is usually measured in Newton per meter square and calculated by using this formula:
P = F/A
Where:
P represents the pressure.F represents the force.A represents the area.Generally speaking, air pressure can be measured in other units such as the following:
PascalAtmosphereMillimeters of mercury (mm Hg).In order to convert the value of pressure in millimeters of mercury (mm Hg) to atmosphere, we would divide by 760 as follows:
Air pressure = 199/760
Air pressure = 0.2618 atm.
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Answer: 0.261842
Explanation:
Name the following of [C0Cl_2(en)(NH_3)_2]^+. multiple choice A) cis-diammine-cis-dichloro-ethylenediaminecobalt (III) ion B) trans-diammine-trans-dichloro-ethylenediaminecobalt (III) ion C) trans-diammine-cis-dichloro-ethylenediaminecobalt (III) ion D) cis-diammine-trans-dichloro- ethylenediaminecobalt (III) ion
Answers
The correct answer is C) trans-diammine-cis-dichloro-thylenediaminecobalt (III) ion.
The complex ion [C0Cl_2(en)(NH_3)_2]^+ contains a cobalt ion (Co^3+) at its center, surrounded by two chloride ions (Cl^-), two ammonia molecules (NH_3), and one ethylenediamine molecule (en). The ethylenediamine molecule is a bidentate ligand, meaning it can bond to the cobalt ion at two different points. The term "trans-diammine-cis-dichloro" refers to the arrangement of the ligands around the cobalt ion. "Trans" means that the two ammine ligands are on opposite sides of the molecule, while "cis" means that the two chloride ions are on the same side of the molecule. This arrangement is consistent with option C. The prefix "diammine" simply indicates that there are two ammonia molecules bonded to the cobalt ion. The prefix "en" indicates the presence of the ethylenediamine molecule.
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Which of the following has the lowest freezing point
A. 0.1 M glucose B. 0.1 M ethanol C. 0.1 M urea D. 0.1 m Sucrose
Answers
The right answer is C) A solute's concentration affects a colligative property that causes a depression in freezing point.
What does chemistry mean by a colligative property?
Colligative qualities of solutions are characteristics that depend on the quantity of molecules or ions in the solute, but not on the kind of solute. Osmotic pressure, boiling point elevation, freezing point depression, and vapor pressure reduction are examples of ligand-like properties.
Why are colligative qualities given that name?
Colligative means "connected to the number" in Greek, which suggests that these attributes are related to the quantity of solute particles rather than their identities. These features are known as colligative properties.
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What is the mass of 2.053 moles of silver nitrate?
Answers
Answer:
Explanation:
Silver nitrate grams to moles
1 grams Silver Nitrate is equal to 0.0058867472248402 mole
please I need help ASAP
Lead nitrate decomposes on heating as indicated in Equation. 2Pb(NO3)2(s) 2PbO(s) + 4NO₂(g) + O₂(g) (4.8) If a volume of 112 cm³ of oxygen gas was collected at STP when a sample of lead nitrate was completely decomposed by heating, calculate the; (a) mass of the lead nitrate sample. (b) mass of lead(II) oxide produced. (c) Volume of nitrogen dioxide gas produced at STP. (Pb=207, N = 14, O=16; molar volume of gas at STP = 22.4 dm³)
Answers
Answer:
To solve this problem, we'll need to use stoichiometry and the molar ratios from the balanced chemical equation. Here's how you can calculate the values:
(a) Mass of the lead nitrate sample:
From the balanced equation, we can see that 2 moles of lead nitrate (Pb(NO3)2) produce 1 mole of oxygen gas (O2). We know that the volume of oxygen gas collected is 112 cm³, which is equal to 112/1000 = 0.112 dm³ (converting cm³ to dm³).
According to the molar volume of gas at STP (22.4 dm³), 1 mole of any gas occupies 22.4 dm³ at STP. Therefore, the number of moles of oxygen gas can be calculated as:
moles of O2 = volume of O2 / molar volume at STP
moles of O2 = 0.112 dm³ / 22.4 dm³/mol = 0.005 mol
Since 2 moles of lead nitrate produce 1 mole of oxygen gas, we can determine the number of moles of lead nitrate as:
moles of Pb(NO3)2 = 2 * moles of O2
moles of Pb(NO3)2 = 2 * 0.005 mol = 0.01 mol
To calculate the mass of the lead nitrate sample, we'll use its molar mass:
mass of Pb(NO3)2 = moles of Pb(NO3)2 * molar mass of Pb(NO3)2
mass of Pb(NO3)2 = 0.01 mol * (207 g/mol + 2 * 14 g/mol + 6 * 16 g/mol)
mass of Pb(NO3)2 = 0.01 mol * 331 g/mol
mass of Pb(NO3)2 = 3.31 g
Therefore, the mass of the lead nitrate sample is 3.31 grams.
(b) Mass of lead(II) oxide produced:
From the balanced equation, we can see that 2 moles of lead nitrate (Pb(NO3)2) produce 2 moles of lead(II) oxide (PbO). So, the number of moles of PbO produced is equal to the number of moles of Pb(NO3)2.
mass of PbO = moles of PbO * molar mass of PbO
mass of PbO = 0.01 mol * (207 g/mol + 16 g/mol)
mass of PbO = 0.01 mol * 223 g/mol
mass of PbO = 2.23 g
Therefore, the mass of lead(II) oxide produced is 2.23 grams.
(c) Volume of nitrogen dioxide gas produced at STP:
From the balanced equation, we can see that 2 moles of lead nitrate (Pb(NO3)2) produce 4 moles of nitrogen dioxide gas (NO2). So, the number of moles of NO2 produced is twice the number of moles of Pb(NO3)2.
moles of NO2 = 2 * moles of Pb(NO3)2
moles of NO2 = 2 * 0.01 mol = 0.02 mol
Using the molar volume of gas at STP, we can calculate the volume of nitrogen dioxide gas:
volume of NO2 = moles of NO2 * molar volume at STP
volume of NO2 = 0.02 mol * 22.4 dm³/mol = 0.448 dm³
Therefore, the volume of nitrogen dioxide gas
explanation about reflection in science
Answers
Answer:
the throwing back by a body or surface of light, heat, or sound without absorbing it.
Explanation:
What is the molarity of a solution when 1.55moles of NaBr is dissolved in 950mL of solution?
Answers
Step 1
Molarity can be defined as follows:
\(Molarity\text{ \lparen M or mol/L\rparen = }\frac{Numberofmolesofsolute}{Volume\text{ of solution \lparen L\rparen}}=\text{ }\frac{n}{V(L)}\)-----------
Step 2
Data provided:
1.55 moles of NaBr (solute)
950 mL of solution
-----------
Step 3
Procedure:
From step 1,
Turn 950 mL into L:
V = 950 mL
1 L = 1000 mL, so V = 950 mL = 0.950 L
V = 0.950 L
--
Then,
Molarity = n/V(L) = 1.55 moles/0.950 L
Molarity = 1.63 mol/L
Answer: Molarity = 1.63 mol/L or M
This worm infects humans by getting into the blood stream. It gets a
warm, safe home in the blood stream. Humans are harmed because they
may go blind or have other complications due to the parasite.
A. Mutualism
B. Commensalism
C. Parasitism
Answers
Which of the following is a non-polar molecule (have no permanent bond dipole moment)? Select the correct answer below: O CO2 be CO O CHO O CHO
Answers
CO₂ is a non-polar molecule. The correct answer is CO₂.
CO₂, which is carbon dioxide, is a non-polar molecule because it has a symmetrical shape and its bond dipoles cancel each other out. In CO₂, the carbon atom is bonded to two oxygen atoms. The molecule has a linear shape, with the carbon atom in the center and the oxygen atoms on either side.
The bond between the carbon atom and each oxygen atom is polar because oxygen is more electronegative than carbon, creating a partial negative charge on the oxygen atoms and a partial positive charge on the carbon atom. However, because the molecule is linear, the bond dipoles are equal in magnitude and opposite in direction, effectively canceling each other out.
This results in a non-polar molecule overall, with no permanent bond dipole moment. To summarize, CO₂ is a non-polar molecule because its bond dipoles cancel each other out due to its symmetrical linear shape. Hence, CO₂ is the correct answer.
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How do nuclear power plants work
Answers
Nuclear power plants heat water to produce steam. The steam is used to spin large turbines that generate electricity. Nuclear power plants use the heat produced during nuclear fission to heat water. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy.
or
The water in the core is heated by nuclear fission and then pumped into tubes inside a heat exchanger. Those tubes heat a separate water source to create steam. The steam then turns an electric generator to produce electricity. The core water cycles back to the reactor to be reheated and the process is repeated.
How many Hydrogen moles needed to get the energy to equal 1 mol of gasoline?
Answers
Answer:
1 grams Hydrogen is equal to 0.992122546977 mole.
Explanation:
Hydrogen is equal to 0.992122546977 mole.
Describe
the kinetic-potential energy
conversions that occur when
a basketball bounces
Answers
At the moment the ball hits the ground, its kinetic energy is greatest and its potential energy is zero.
The _____ effect is the phenomenon responsible for a decrease in solubility of a salt when one of the salt's ions is already present in solution.
Answers
The common ion effect is the phenomenon responsible for a decrease in solubility of a salt when one of the salt's ions is already present in solution.
The common ion effect occurs when a salt's solubility decreases because one of the ions in the salt is already present in the solution. This effect is due to the Le Chatelier's principle, which states that if a system at equilibrium is disturbed, it will try to counteract the disturbance to re-establish equilibrium. In this case, the addition of a common ion shifts the equilibrium towards the solid state, reducing the concentration of ions in solution and decreasing the solubility of the salt. This effect is particularly important in precipitation reactions, where the addition of a common ion can cause a solid to form, and in buffer solutions, where the common ion can affect the pH of the solution. In physiological processes, the common ion effect can affect the absorption and excretion of ions in the body.
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What is the pOH of a solution whose pH is 12.41?
Answers
Answer:
1.59
Explanation:
14=pOH+pH
pOH=14-12.41
pOH=1.59
A hot air balloon is an example of what type of system? *
Answers
Answer:
The balloon transport system or Hot Air Balloon is one of several transportation methods in RuneScape. During the Enlightened Journey quest it can be used for travel between two locations. After the quest is complete, four more locations are available to be unlocked by completing respective journeys to those locations.
Explanation:
transportation
how many moles are present in 132.7 grams of Cu
Answers
Moles = mass/Ar
= 132.7/63.5
= 2.089 moles
is neon an example of a metal or nonmetal
Answers
Answer:
nonmetal
Explanation:
correcto answers only
D Question 3 What is the correct IUPAC name of the following compound? CI- Problem viewing the image, Click Here O 7-chlorohept-(3E)-en-1-yne O 7-chlorohept-(3Z)-en-1-yne O 1-chlorohept-(4E)-en-6-yne
Answers
The correct IUPAC name of the compound is 7-chlorohept-(3E)-en-1-yne.
The IUPAC name of a compound is determined by following a set of rules established by the International Union of Pure and Applied Chemistry (IUPAC). To determine the correct name of the compound given, we need to analyze its structure and identify the functional groups, substituents, and their positions.
In this case, the compound has a chain of seven carbon atoms (hept) with a chlorine atom (chloro) attached at the 7th position. It also contains a triple bond (yne) and a double bond (en) on adjacent carbon atoms. The stereochemistry of the double bond is indicated by the E configuration, which means that the two highest priority substituents are on opposite sides of the double bond.
Therefore, the correct IUPAC name of the compound is 7-chlorohept-(3E)-en-1-yne.
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