Stoichiometry Chemistry Worksheets With Answers Page 8
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1
2
3
4
5
6
7
8
9
10
11(A)
HCl
(B)
H
O
2
(C)
H
PO
3
4
(D)
H
SO
2
4
(E)
HF
Statement I
Statement II
6.
In a balanced equation, the number of
BECAUSE Once the limiting reagent has been consumed,
moles of each substance is equal.
the reaction can no longer continue.
7. A hydrocarbon (a compound consisting solely of carbon and hydrogen) is found to be 96% carbon by
mass. What is the empirical formula for this compound?
(A)
C
H
2
(B)
CH
2
(C)
C
H
3
(D)
CH
3
(E)
C
H
4
8. An unknown compound contains the elements C, H, and O. It is known to contain 48% C and 4.0% H
by mass. The molar mass of this compound has been determined in the lab to have a value of 200. The
molecular formula for this compound is
(A)
C
H
O
2
3
2
(B)
C
H
O
4
6
4
(C)
C
H
O
4
4
3
(D)
C
H
O
8
3
6
(E)
C
H
O
8
8
6
9.
When 7.0 g of ethene (C
H
) burns in oxygen to give carbon dioxide and water, how many grams of
2
4
CO
are formed?
2
C
H
+ 3O
2CO
+ 2H
O
2
4
2
2
2
(A)
9.0 g
(B)
22 g
(C)
44 g
(D)
82 g
(E)
180 g
10. Consider the reaction below. What mass of CF
is formed by the reaction of 8.00 g of methane with
4
an excess of fluorine?
CH
+ 4F
CF
+ 4HF
4 ( g )
2( g )
4 ( g )
( g)
(A)
19 g
(B)
22 g
(C)
38 g
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