General Chemistry Answers

2AgNO3+Ni→Ni(NO3)2+2Ag

What would happen to a person's mass if the composition of isotopes on earth changed?

Consider the information above on the combustion of acetone. Solve

the following problem involving the Enthalpy of Chemical Reactions. Show your

solutions. You may refer to the lecture notes for sample problems.

Calculate the amount of heat released during the combustion of

a. 0.75 mole of C3H6O

b. 120g of C3H6O

2.) Calculate ΔG⁰ for a reaction where ΔH⁰ is equal to 36.2 kJ and ΔS⁰ is equal to 123 J/K at 298 K. Is this a spontaneous reaction?

1. What is the relationship between the Ksp expressions for a chemical reaction and its reverse chemical reaction?

1. Under what conditions is Keq = KP?

Rate of Reaction (3 points each)

Refer to the table below:

chem 13B.png

a. Compute for the Average rate of reaction (or formation) of NO2 from 150s to 400s.

Determine the average rate of reaction (or formation) of O2 from 250s to 350s

If 40.0dmcube of nitrogen is collected over water of 22 °c when atmospheric pressure Is 727 Torr,what is the volume of dry nitrogen at standard temperature and pressure, assuming ideal behavior?

What is the volume of a 1950 kg/m³ object that is 249 kg

The initial rate data for the reaction 2N₂O_5(g) → 4NO_2(g) + O_2(g) is shown in the following table.

            Experiment    [N₂O₅](M)        Rate (M/s)

                1         1.28 × 10²         22.5

                2         2.56 x 10²         45.0

a. Determine the order of reaction of the given reactant.

b. Determine the value of the rate constant for this reaction.