1.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
2
B.
3
C.
4
D.
5
E.
6
2.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
1
B.
2
C.
3
D.
4
E.
5
3.
All the following are clues that a chemical reaction has taken place
except
A.
a color change
B.
a solid forms
C.
the reactant is smaller
D.
bubbles form
E.
a flame occurs
4.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
2
B.
3
C.
4
D.
5
E.
6
5.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
2
B.
3
C.
4
D.
5
E.
6
6.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
2
B.
3
C.
4
D.
5
E.
6
7.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
5
B.
4
C.
3
D.
2
E.
1
8.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
5
B.
4
C.
3
D.
2
E.
1
9.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
1
B.
2
C.
3
D.
4
E.
6
10.
In the reaction
Al
2
S
3
(s)
+ 6HCl
(aq)
®
2AlCl
3
(aq)
+ 3H
2
S
(g)
how many moles of HCl are used for each mole of AlCl
3
formed?
A.
0
B.
1
C.
1.5
D.
2
E.
3
11.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
1
B.
2
C.
3
D.
4
E.
5
12.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
1
B.
2
C.
3
D.
4
E.
6
13.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
4
B.
7
C.
8
D.
10
E.
14
14.
When the following equation is balanced using the smallest possible integer, what is the number in front of the underlined substance?
A.
1
B.
2
C.
3
D.
4
E.
5
15.
The equation N
2
+ 3H
2
®
2NH
3
means that 1 g of N
2
reacts with 3 g of H
2
to form 2 g of NH
3
.
A.
True
B.
False
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