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Test Description: Get your calculator and mole machine for some mole fun!
Instructions: Answer all questions to get your test result.
1) 3.2 moles of calcium chlride have a mass of ____grams
A
240
B
355
C
0.56
D
0.028
2) 347 g of magnesium oxide is _____ moles
A
5.22
B
13880
C
17.4
D
8.68
3) 3.2 moles of zinc nitrate has ____ molecules
A
5.3 E -24
B
0.013
C
1.93 E 24
D
6.02 E 23
4) what is the percent by mass of carbon in a molecule of carbon tetrachloride
A
8%
B
26%
C
79%
D
13%
5) What percent by mass is oxygen in aluminum oxide?
A
47%
B
50%
C
26%
D
18%
6) How many moles of tungsten are in 8.34 E 24 atoms of tungsten?
A
13.9 E 47
B
2544
C
0.075
D
13.9
7) how many moles of calcium phosphide are in 250 grams
A
182
B
.728
C
1.4
D
1505
8) How many liters of gas are in 3 moles of helium
A
12
B
268.8
C
0.4
D
67.2
9) what perecent by mass is sodium of sodium chloride
A
2.5%
B
40%
C
60%
D
50%
10) Sodium is a ___
A
halogen
B
gas
C
salt
D
metal
*select an answer for all questions
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