Given:
1,500 mL of water
1.33 m (molal solution
Required:
grams of hydrogen peroxide (H2O2
solution:
1.33 molal = 1.33 m = 1.33 moles H2O2/kg water
1 gram/liter of water (1 liter/1000 mL) (1500mL)(1 kg/1000g) = 0.0015 kg water
1.33 moles H2O2/kg water (0.0015 kg water) = 0.001995 moles H2O2
Molar mass of H2O2 = 34 g/mol
0.001995 moles H2O2 (34 g/mol) = 0.068 grams H2O2