5. The total volume of seawater in a certain body of water is approximately 3.8 x 1020 L. If seawater

contains 3.1% sodium chloride by mass and the density of seawater is 1.04 g/mL,

a) What is the total mass of seawater in the body of water in kg? Solve using the density equation

(write the equation) or use dimensional analysis.

b) What is the total mass of sodium chloride in the seawater in kg?