Chapter 6, Problem 130CP

a)

Interpretation Introduction

Interpretation: The mass percentage of magnesium in the mixture has to be determined and the concentration of $\text{HCl}$ has to be calculated.

Concept Introduction: The mass percentage of compound can be calculated from the calculated mass of the compound to the total mass of the compound. The mass percent is given by,

$\text{Mass}\text{percent(in\%)=}\frac{\text{calculated}\text{mass(in}\text{g)}}{\text{Total}\text{mass(in}\text{g)}}$

b)

Interpretation Introduction

Interpretation: the concentration of $\text{HCl}$ has to be calculated.

Concept introduction: Concentration of solution can be defined in terms of molarity as moles of solute to the volume of solution. The concentration of solution can be given by,

$\text{Concentration(in}\text{M)=}\frac{\text{Moles}\text{of}\text{solute(in}\text{g)}}{\text{Volume}\text{of}\text{solution(in}\text{L)}}$