Actual Exam //2025 With Questions
And Well Elaborated Questions And
Correct Answers
You have recorded the volume of hydrogen gas produced in the reaction and you have
calculated the number of moles used in the first part of the experiment. Based on this
information, what is the molar volume of hydrogen gas at room temperature? Choose
the closest answer. - CORRECT ANSWER 24.1 L/mol
The molar volume of an ideal gas at 21.5 oC is listed in the Background section of the
lab manual as 24.179 L/mol. Compare your measured value in the first part of the
experiment to the listed value by calculating the experimental error from the second part
of the experiment according to the formula below. Choose the closest answer.
% error = |experimental molar volume - listed molar volume| / (listed molar volume) x
100 - CORRECT ANSWER 0.5%
In the production of ammonia via the Haber process, nitrogen gas is combined with
hydrogen gas according to the following reaction.
N2(g) + 3H2(g) -> 2NH3(g)
If 50 moles of nitrogen gas were used in the reaction and there was excess hydrogen
gas, how many moles of ammonia could be generated? - CORRECT ANSWER 100 mol