Mole Calculation Practice Worksheet

Mole Calculation Practice WorksheetAnswer the following questions:1) How many moles are in 25.0 grams of water?2) How many grams are in 4.500 moles of Li 2 O?3) How many molecules are in 23.0 moles of oxygen?4) How many moles are in 3.4 x 10 23 molecules of H 2 SO 4 ?5) How many molecules are in 25.0 grams of NH 3 ?6) How many grams are in 8.200 x 10 22 molecules of N 2 I 6 ?

Mole Calculation Practice Worksheet SolutionsAnswer the following questions:1) How many moles are in 25.0 grams of water?1.39 moles1 mole H 2 O = 18.0 g H 2 O25 g H 2 O 1 mol H 2 O18.0 g H 2 O= 1.39 mol H 2 O2) How many grams are in 4.500 moles of Li 2 O?134.6 grams1 mole Li 2 O = 29.90 g Li 2 O4.500 mol Li 2 O 29.90 g Li 2 O1 mol Li 2 O= 134.6 g Li 2 O3) How many molecules are in 23.0 moles of oxygen?1.38 x 10 25 molecules1 mole oxygen molecules = 6.02 x 10 23 oxygen molecules23.0 mol O 2 6.02 x 10 23 O 2 molecules1 mol O 2= 1.38 x 10 25 O 2 molecules4) How many moles are in 3.4 x 10 23 molecules of H 2 SO 4 ?0.56 moles1 mole anything = 6.02 x 10 23 anything3.4 x 10 23 molecules H 2 SO 4 1 mol H 2 SO 46.02 x 10 23 molecules H 2 SO 4= 0.56 mol H 2 SO 4

5) How many molecules are in 25.0 grams of NH 3 ?8.85 x 10 23 molecules1 mole NH 3 = 17.0 g NH 31 mole anything = 6.02 x 10 23 anything25.0 g NH 3 1 mol NH 3 6.02 x 10 23 molecules NH 317.0 g NH 3 1 mol NH 3= 8.85 x 10 23 moleculesNH 36) How many grams are in 8.200 x 10 22 molecules of N 2 I 6 ?107.5 grams1 mole N 2 I 6 = 789.4 g N 2 I 61 mole anything = 6.02 x 10 23 anything8.200 x 10 22 molecules N 2 I 6 1 mol N 2 I 6 789.4 g N 2 I 66.02 x 10 23 molecules N 2 I 6 1 mol N 2 I 6= 107.5 g N 2 I 6