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WorksheetsMole Practice #3
Total questions: 10
Worksheet time: 50mins
Name
Class
Date
1.
What is the mass of 1.2 moles of IrI3?
a)
570 g
b)
690 g
c)
320 g
d)
957 g
2.
How many moles are in 16.94g of water?
a)
16.94 mol H2O
b)
0.9401 mol H2O
c)
305.3 mol H2O
d)
1.063 mol H2O
3.
How many grams are in 3.3 mol of Potassium sulfide (K2S)?
a)
360 g
b)
454 g
c)
238 g
d)
132 g
4.
You have 8.65 x 1025 atoms arsenic. How many grams do you have?
a)
144 g As
b)
10,765 g As
c)
107 g As
d)
None of these
5.
Which of the following would have the highest number of moles?
a)
4 g CO2
b)
15 g H2O
c)
22 g NaCl
d)
100 g AgCl
6.
Which of the following would have the highest mass?
a)
0.75 mol Co3(PO4)2
b)
12 mol CH4
c)
16.2 mol chlorine gas
d)
1.2 mol IrI3
7.
Calculate the number of nitrogen atoms in 20.9 grams of nitrogen.
a)
1.49 moles
b)
0.746 moles
c)
0.37 moles
d)
1.74 moles
8.
Which compound has the smallest molar mass?
a)
CO
b)
CO2
c)
H2O
d)
H2O2
9.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
10.
How many grams of silicon would there be in a sample that contained 9.99 x 1022 atoms?
a)
1.69 g
b)
4.66 g
c)
1.66 g
d)
1.79 g
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