Chapter 3, Problem 3.118P

(a)

Interpretation Introduction

Interpretation:

$\text{Mass }\%$ of $\text{NaCl}$ in seawater is to be calculated.

Concept introduction:

Mass percent is defined as the mass of a component divided by the total mass of the mixture, multiplied by 100.

The formula to calculate the mass percent is as follows:

  $\text{Mass}\text{percent}=\left(\frac{\text{mass}\text{of}\text{solute}}{\text{mass}\text{of}\text{solution}}\right)100$

(b)

Interpretation Introduction

Interpretation:

$\text{Mass }\%$ of ${\text{Na}}^{+}$ ions and of ${\text{Cl}}^{-}$ ions in seawater is to be calculated.

Concept introduction:

Mass percent is defined as the mass of a component divided by the total mass of the mixture, multiplied by 100.

The formula to calculate the mass percent is as follows:

  $\text{Mass}\text{percent}=\left(\frac{\text{mass}\text{of}\text{solute}}{\text{mass}\text{of}\text{solution}}\right)100$