R Ricky New member Dec 13, 2009 #1 The concentration of Sodium Chloride in an aqueous solution that is 2.23M and that has a density of 1.01 g/mL is _________ % by mass.
The concentration of Sodium Chloride in an aqueous solution that is 2.23M and that has a density of 1.01 g/mL is _________ % by mass.
D Dr.A New member Dec 13, 2009 #2 2.23 M means 2.23 mol NaCl in 1 L of solution ( = 1000 mL) mass NaCl = 2.23 mol x 58.44 g/mol= 130.3 g mass solution = 1000 mL x 1.01 g/mL = 1010 g % by mass = mass solute x 100 / mass solution = 130.3 x 100 / 1010 = 12.9
2.23 M means 2.23 mol NaCl in 1 L of solution ( = 1000 mL) mass NaCl = 2.23 mol x 58.44 g/mol= 130.3 g mass solution = 1000 mL x 1.01 g/mL = 1010 g % by mass = mass solute x 100 / mass solution = 130.3 x 100 / 1010 = 12.9
