Problem+set+16

1. (Rachel Hirshman)
 * solubility**-degree to which a substance dissolves in a solvent to make a solution
 * solution**-a homogeneous mixture of two or more substances
 * unsaturated**-having the power to still dissolve more of the substance
 * saturated**-point at which a solution of a substance can dissolve more of that substance
 * supersaturated**- a solution that contains more of the dissolved material than could be dissolved by the solvent

2. a. 75 g b. 90 g c. 11 g d. 17.5 (Rachel Hirshman)

3- (Becky Lee)
 * molarity-** amount of a constituent (moles) divided by volume of mixture
 * % (m/m) -** amount of grams in a solute divided by 100g of a solution *100%
 * % (v/v) -** volume of solute divided by total volume of solution *100%

5- a.) molarity = # of moles/Liters of the solution molarity = #of moles/Liter of solution = 2.00 moles of sodium chloride/2.00 Liters of solution = 1.00 M b.) molar mass of Pb(NO3)2 = 331.21 molar mass = g/mol = 35g/331.21=.106 .106 mol/ 1.25 Liters of solution = 0.085 M c.) molar mass of KCl = 74.55 150.25g/74.55 = 2.02 mol 2.02 mol/ .75 L= 2.69 M (Andrew Volpyansky)