Part 1: Calculate the mass percent (m/m) of a solution prepared by dissolving 49.53 g of NaCl in 162.7 g of H2O. Express your answer to four significant figures. Part 2: Vinegar is a solution of acetic acid in water. If a 285 mL bottle of distilled vinegar contains 28.0 mL of acetic acid, what is the volume percent (v/v) of the solution? Express your answer to three significant figures.

Part 3: Calculate the mass/volume percent (m/v) of 18.5 g NaCl in 59.5 mL of solution.
Express your answer to three significant figures.

Part 4: Calculate the molarity (M) of 159.8 g of H2SO4 in 1.030 L of solution.
Express your answer to four significant figures.