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WorksheetsMoles, mass, and molar mass
Total questions: 10
Worksheet time: 50mins
Name
Class
Date
1.
How many moles are in 15g of lithium?
a)
104 mol
b)
2.2 mol
c)
0.46
2.
How many grams are in 2.4mol of sulfur?
a)
0.075g
b)
77g
c)
6.2x102g
3.
How many moles are in 22g of argon?
a)
0.55mol
b)
1.8mol
c)
8.8x102mol
4.
How many grams are in 11.9mol of chromium?
a)
0.229g
b)
4.37g
c)
618g
d)
619g
5.
What is the molar mass of Mn2Se7?
a)
542.50 g/mol
b)
601.34 g/mol
c)
662.60 g/mol
6.
What is the molar mass of ammonium sulfate?
a)
114.12 g/mol
b)
132.17 g/mol
c)
209.27 g/mol
d)
2.32x105 g/mol
7.
How many moles are in 98.3 g of aluminium hydroxide?
a)
0.794 mol
b)
1.26 mol
c)
2.23 mol
d)
7.67x103 mol
8.
How many grams are in 2.3x10-4 mol of calcium phosphate?
a)
0.031 g
b)
0.071 g
c)
0.084 g
d)
5.9x105 g
9.
How many grams are in 3.3 moles of potassium sulfide?
a)
21.6 g
b)
33 g
c)
235 g
d)
3.6x102 g
10.
What is the identity of an unknown polyatomic element, which has 0.0404 mol of molecules in 5.00 g?
a)
Sulfur
b)
Phosphorous
c)
Chlorine
d)
Antimony
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