Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Question 34
According to the chemical equation below, how many moles of O2 gas are needed to completely
react with 10.0 L of C2H2 gas at STP?
2 C2H2 +5 02 --> 4 CO2 + 2 H2O
O none are correct
O 0.560 mol
O 44.8 mol
O 89.6 mol
O 1.12 mol
Question 35
Which of the following is true? mark all that apply
O the theoretical yield of a reaction is a measured quantity that is obtained by experimentation
O none are correct
O the actual yield of a reaction is a calculate
quantity which is based on the masses of reactants used.
O the actual yield of a reaction is usually less than the theoretical yield of the reaction
O the percent yield of a reaction is a measure of the efficiency of a reaction and product loss
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