10/21/22

Give an example of a salt that can decrease the ionization of HClO2 (aq). Give an example of a salt that can decrease the ionization of NH3 (aq).
a) Give an example of a salt that can decrease the ionization of HClO2 (aq).b) Give an example of a salt that can decrease the ionization of NH3 (aq).
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10/21/22

Gaseous butane CH3CH22CH3
Gaseous butane CH3CH22CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O - Suppose 1.74 g of butane is mixed with 4.1 g of oxygen. Calculate the... more
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10/21/22

A chemist adds 85ml of a 5.38 mol/l silver nitrate solution to a reaction flask. Calculate the millimoles of silver nitrate the chemist has added to the flask.

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10/21/22

What is the minimum mass of magnetite , an iron ore, from which 180g of pure iron could be extracted?
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10/21/22

An acid-base titration was performed. It took 21.50 mL of the base, NaOH, to titrate 25.00 mL of 1.013 M HCl, the acid. What was the Molarity of the NaOH?
An acid-base titration was performed. It took 21.50 mL of the base, NaOH, to titrate 25.00 mL of 1.013 M HCl, the acid. What was the Molarity of the NaOH?
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10/20/22

Equilibrium Question
For the unbalanced reactionH2​(g)+NO(g)H2​O(g)+N2​(g)the initial concentrations are 6.25 M H2, 7.50 M NO, and no H2O or N2. At equilibrium, [N2] = 1.50 M.  Balance the equation using... more
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10/20/22

Equilibrium Question

For the reaction2NH3​(g)+2O2​(g)N2​O(g)+3H2​O(g)the initial mixture contains 7.45 mol NH3 and 6.50 mol O2. At equilibrium, 1.50 mol of N2O gas are found.How many moles of NH3, O2, and H2O are... more
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10/20/22

Reversible Reaction
For a reversible reactionN2​(g)+3H2​(g)2NH3​(g)the concentrations at equilibrium are [N2] = 0.034  M, [H2] = 0.95 M, and [NH3] = 0.0025 M. What is the value of K at this temperature?
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10/20/22

A 28.5 mL sample of 0.393 M trimethylamine, (CH3)3N, is titrated with 0.273 M hydrobromic acid.
A 28.5 mL sample of 0.393 M trimethylamine, (CH3)3N, is titrated with 0.273 M hydrobromic acid.The pH before the addition of any hydrobromic acid is______
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10/20/22

What is the pH at the equivalence point in the titration of a 17.1 mL sample of a 0.331 M aqueous hydrocyanic acid solution with a 0.421 M aqueous sodium hydroxide solution?
What is the pH at the equivalence point in the titration of a 17.1 mL sample of a 0.331 M aqueous hydrocyanic acid solution with a 0.421 M aqueous sodium hydroxide solution?
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10/20/22

What is the equilibrium partial pressure?
One reaction that occurs in producing steel from iron ore is the reduction of iron(II) oxide by carbon monoxide to give iron metal and carbon dioxide. The equilibrium constant, Kp, for the reaction... more
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10/20/22

How many moles??
At a certain temperature, Kc equals 1.4 x 10^2 for the reaction: 2CO(g)+O2(g) --> 2CO2 (g). If a 2.50-L flask contains 0.400 mol of CO2 and 0.100 mol of O2 at equilibrium, how many moles of CO... more
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10/20/22

How to find the answer and what is it?
The average kinetic energy of the molecules in a gas sample depends only on the temperature, 𝑇. However, given the same kinetic energies, a lighter molecule will move faster than a heavier... more
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10/20/22

How to find the percent yield and what is it?
Hydrazine, N2H4, reacts with oxygen to form nitrogen gas and water.N2H4(aq)+O2(g)⟶N2(g)+2H2O(l)If 2.35 g of N2H4 reacts with excess oxygen and produces 0.650 L of N2, at 295 K and 1.00 atm, what is... more
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10/20/22

Please help me with this question
What is the shorthand notation for a galvanic cell that represents the following galvanic cell reaction? 2I-(aq) + Br2(l) = I2(s) + 2Br-(aq)
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10/20/22

Electrochemistry
1. What is the change in the cell voltage when the ion concentrations in the Cathode half-cell are increased by a factor of 10? 2. What is the change in the cell voltage when the ion concentrations... more
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10/19/22

Calculate the rate of change in temperature between 0 and 5 minutes

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10/19/22

Equilibrium Constant Expression
****Do not include states of matter, multiplication symbols, or spaces.Use brackets [ ] to indicate concentration***Write the equilibrium constant expression for each of the following... more
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10/19/22

Chemistry Equilibrium

N2(g) + 3H2 (g) ----> 2NH3 (g) , the equilibrium constant value (K) was calculated to be 2.0×10-8 at a given temperature.1.What is the value of K for the reverse reaction at the same temperature?
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10/19/22

How many grams of NO2 are needed to form 86.0 g of HNO3
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10/19/22

Equilibrium Question
At a given temperature, K = 2.4×104 for the following forward reaction:2NO(g)+O2(g) -----> 2NO2(g)1.Write the reverse reaction. Be sure to include all states of matter.2.What is the K value for... more
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10/19/22

Chemistry Reciprocal

1. Calculate the reciprocal of 8.00×10-9.2.Calculate the reciprocal of 1.00×1015.
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10/19/22

Chemistry Equilibrium

Which of the following statements describe a reaction that is at equilibrium? Choose one or more:A. There are no changes taking place within the reaction.B. No net change is occurring.C. The... more
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10/19/22

Arrange the following elements in order of increasing electronegativity.
BAlOInGaI put them in the order Al, In, Ga, B, O and the website is still saying my answer is wrong. I'm so confused.
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10/19/22

Gas Stoichiometry and Gas Effusion and Diffusion
In 25 minutes, 300 mL of sulfur dioxide diffused through a porous partition. Under the same conditions of temperature and pressure, 250 mL of an unknown gas Y diffused through the same partition in... more
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