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Determining Moles And Grams
Test Description: Using molar mass to determine grams or moles
Instructions: Answer all questions to get your test result.
1) What is the molar mass of CH4?
A
78 g / mol
B
16 g / mol
C
52 g / mol
D
5 g / mol
2) How many grams are in 2 moles of FeH3?
A
118 g
B
114 g
C
112 g
D
116 g
3) How many moles are in 45 grams of CrO3?
A
.2 moles
B
.5 moles
C
.4 moles
D
.3moles
4) What is the molar mass of Co(OH)3?
A
118 g /mol
B
108.9 g /mol
C
109.9 g /mol
D
113 g /mol
5) How many grams are in six moles of HF?
A
320 grams
B
20 grams
C
120 grams
D
220 grams
6) How many moles are in 110 grams of Pb(NO3)2?
A
.1 mol
B
.2 mol
C
.03 mol
D
.3 mol
7) How many grams are in .78 moles of LiClO?
A
90.6 grams
B
163.6 grams
C
45.06 grams
D
45.6 grams
8) How many moles are in 215 grams of Mn3(PO4)2?
A
.6 mol
B
.4 mol
C
.8 mol
D
.2 mol
9) What is the molar mass of K2CO3?
A
118.2 g / mol
B
130.2 g /mol
C
138.2 g /mol
D
125 g /mol
10) How many moles are in 200 grams of Sc(NO3)2?
A
.3 mol
B
.7 mol
C
.5 mol
D
.9 mol
11) What is the molar mass of sodium hypochlorite?
A
90.5 g / mol
B
74.5 g / mol
C
177.9 g / mol
D
58.5 g / mol
12) How many grams are in .57 moles of potassium hydroxide?
A
None of the above
B
32 g
C
56.1 g
D
22.9 g
13) How many moles are in 50 grams of boron fluoride?
A
.7 mol
B
1.4 mol
C
1.7 mol
D
1.1 mol
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