Mole Calculation Practice Worksheet
Mole Calculation Practice Worksheet
Answer the following questions: 1) How many moles are in 25.0 grams of water?
2) How many grams are in 4.500 moles of Li2O?
3) How many molecules are in 23.0 moles of oxygen?
4) How many moles are in 3.4 x 1023 molecules of H2SO4?
5) How many molecules are in 25.0 grams of NH3?
6) How many grams are in 8.200 x 1022 molecules of N2I6?
Mole Calculation Practice Worksheet Solutions
Answer the following questions:
1) How many moles are in 25.0 grams of water?
1.39 moles
1 mole H2O = 18.0 g H2O
25 g H2O 1 mol H2O 18.0 g H2O
= 1.39 mol H2O
2) How many grams are in 4.500 moles of Li2O?
134.6 grams
1 mole Li2O = 29.90 g Li2O
4.500 mol Li2O 29.90 g Li2O = 134.6 g Li2O
1 mol Li2O
3) How many molecules are in 23.0 moles of oxygen?
1.38 x 1025 molecules
1 mole oxygen molecules = 6.02 x 1023 oxygen molecules
23.0 mol O2
6.02 x 1023 O2 molecules 1 mol O2
= 1.38 x 1025 O2 molecules
4) How many moles are in 3.4 x 1023 molecules of H2SO4?
0.56 moles
1 mole anything = 6.02 x 1023 anything
3.4 x 1023 molecules H2SO4
1 mol H2SO4 = 0.56 mol H2SO4
6.02 x 1023 molecules H2SO4
5) How many molecules are in 25.0 grams of NH3? 8.85 x 1023 molecules
1 mole NH3 = 17.0 g NH3
1 mole anything = 6.02 x 1023 anything
25.0 g NH3 1 mol NH3 17.0 g NH3
6.02 x 1023 molecules NH3 = 8.85 x 1023 molecules
1 mol NH3
NH3
6) How many grams are in 8.200 x 1022 molecules of N2I6?
107.5 grams
1 mole N2I6 = 789.4 g N2I6
1 mole anything = 6.02 x 1023 anything
8.200 x 1022 molecules N2I6
1 mol N2I6
6.02 x 1023 molecules N2I6
789.4 g N2I6 1 mol N2I6
= 107.5 g N2I6
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