REGULAR QUIZZES - REGULAR TOPIC 7 Stoichiometry SET C
REGULAR Quizzes - REGULAR TOPIC 7 Stoichiometry SET C.
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QUESTION 1. Consider the reaction below. How many moles of FeS
2
will react with 6.00 moles of oxygen?
4FeS
2
+ 11O
2
==> 2Fe
2
O
3
+ 8SO
2
(A) 6.00
(B) 11.0
(C) 2.18
(D) 2.75
(E) 0.545
QUESTION 2. What is the empirical formula of an oxide that is 71.43 % Calcium?
(A) CaO
(B) Ca
2
O
(C) CaO
2
(D) Ca
2
O
2
O
(E) None of the Above
QUESTION 3. What would be the expected final mass when 5.6600 g of Copper (II) Sulfate pentahydrate is heated to a constant mass?
(A) 3.6224 g
(B) 2.0376 g
(C) 0.11320 g
(D) 0.022640 g
(E) None of the Above
QUESTION 4. What is the average mass of two atoms of Carbon?
(A) 12.01 g
(B) 24.02 g
(C) 6.02 x 10
23
grams
(D) 6.02 x 10
23
amus
(E) None of the Above
QUESTION 5. What is the average mass of one atom of Sulfur?
(A) 6.02 x 10
23
g
(B) 32.0 g
(C) 5.32 x 10
-23
g
(D) 1.93 x 10
25
g
(E) None of the Above
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