chp 9 questoin below

Question

Calculate the mass/volume percent of a NaClNaCl solution in which 112 gg of NaClNaCl is dissolved in enough water to give a total volume of 2.79 LL .

Express your answer numerically.

Answer 1

Mass per volume percent is gotten by dividing the mass of solute by the total volume in mL and multiplying by 100.

112 g NaCl / (2.79 Lx 1000 mL/L) x 100 = 4.01 % (g / 100 mL)