Mole Calculation Worksheet With Answers Page 2
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1
2Solutions
1)
How many moles are in 40.0 grams of water?
40.0 g H
O x 1 mole H
O = 2.22 mole H
O
2
2
2
18.01 g H
O
2
2)
How many grams are in 3.7 moles of Na
O?
2
3.7 moles Na
O x 62 g Na
O = 230 g Na
O
2
2
2
1 mole Na
O
2
3)
How many atoms are in 14 moles of cadmium?
23
23
14 mole Cd x 6.022 x 10
atoms Cd = 8.4 x 10
atoms Cd
1 mole Cd
22
4)
How many moles are in 4.3 x 10
molecules of H
PO
?
3
4
22
-2
4.3 x 10
molecules H
PO
x
1 mole H
PO
= 7.1 x 10
moles H
PO
3
4
3
4
3
4
23
6.022 x 10
molecules H
PO
3
4
5)
How many molecules are in 48.0 grams of NaOH?
23
48.0 molecules NaOH x 1 mole NaOH x 6.022 x 10
molecules NaOH
40 g NaOH
1 mole NaOH
23
= 7.23 x 10
molecules NaOH
24
6)
How many grams are in 4.63 x 10
molecules of CCl
?
4
24
4.63 x 10
molecules CCl
x
1 mole CCl
x 153.8 g CCl
= 1180 g CCl
4
4
4
4
23
6.022 x 10
molecules CCl
1 mole CCl
4
4
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