REGULAR QUIZZES - REGULAR TOPIC 7 Stoichiometry SET B
REGULAR Quizzes - REGULAR TOPIC 7 Stoichiometry SET B.
RELOAD
this page each time before re-taking and re-grading the quiz.
QUESTION 1. A 54.9 g sample of a hydrocarbon undergoes combustion to produce 38.0 g of water. What is the percentage of hydrogen in the hydrocarbon?
(A) 2.11 %
(B) 4.22 %
(C) 54.9 %
(D) 73.1 %
(E) 7.69 %
QUESTION 2. In the reaction below, 9.23 moles of carbon dioxide are formed from 10.2 moles of the hydrocarbon. What is the percentage yield?
2C
4
H
10
+ 13O
2
==> 8CO
2
+ 10H
2
O
(A) 22.6 %
(B) 9.23 %
(C) 40.8 %
(D) 90.5 %
(E) None of the Above
QUESTION 3. Two moles of a particular group I bromide have a mass of 206 g. Identify the group I metal.?
(A) Li
(B) Na
(C) K
(D) Rb
(E) Cs
QUESTION 4. Which of the following contains the greatest number of molecules?
(A) 3.00 moles of Carbon dioxide
(B) 2.00 moles of Carbon dioxide
(C) 2.00 moles of Sulfuric acid
(D) 88.0 grams of Carbon dioxide
(E) 98.0 grams of Sulfuric acid
QUESTION 5. What is the % by mass of beryllium chloride?
(A) 50% Be, 50% Cl
(B) 33% Be, 67% Cl
(C) 25% Be, 75% Cl
(D) 11.25% Be, 88.75% Cl
(E) 10.1% Be, 89.9% Cl
RELOAD THIS QUIZ
RETURN TO PREVIOUS QUIZ SET IN THIS TOPIC
MOVE ON TO NEXT QUIZ SET IN THIS TOPIC
RETURN TO REGULAR QUIZ INDEX PAGE
