1.A 100 mL solution contains 5.7g MgCl2(MM = 94 g/mol). The density of the solution is 1.03 g/mL. Express the concentration in:
a.% by mass
2.A 68.8 g H2SO4(MM = 98 g/mol) is added to H2O to make a 500 mL solution. If the density of the solution is 1.2 g/mL, calculate the molality.