Chapter 3, Problem 60QAP

Interpretation Introduction

(a)

Interpretation:

The mass of the oxidized tin foil should be calculated..

Concept introduction:.

The number of moles of a substance is related to mass and molar mass as follows:.

$n=\frac{m}{M}$.

Here,mis mass andMis molar mass of the substance..

Also, according to Avogadro’s law in 1 mol of a substance there are $6.023\times {10}^{23}$ units of that substance. Here, $6.023\times {10}^{23}$ is known as Avogadro’s number and denoted by symbol $N_A$..

The molarity of a solution is defined as number of moles of solute in 1 L of the solution. It is mathematically represented as follows:.

$M=\frac{n}{V}$.

Here, n is number of moles of solute and V is volume of solution in L. Thus, the unit of molarity is mol/L.

Interpretation Introduction

(b)

Interpretation:

The volume of the air required to completely react with the tin foil should be calculated..

Concept introduction:.

The number of moles of a substance is related to mass and molar mass as follows:.

$n=\frac{m}{M}$.

Here,mis mass andMis molar mass of the substance..

Also, according to Avogadro’s law in 1 mol of a substance there are $6.023\times {10}^{23}$ units of that substance. Here, $6.023\times {10}^{23}$ is known as Avogadro’s number and denoted by symbol $N_A$..

The molarity of a solution is defined as number of moles of solute in 1 L of the solution. It is mathematically represented as follows:.

$M=\frac{n}{V}$.

Here, n is number of moles of solute and V is volume of solution in L. Thus, the unit of molarity is mol/L.