Chapter 8, Problem 32E

Interpretation Introduction

(a)

Interpretation:

The number of molecules in $\text{2}\text{.75}\text{g}$ of nitrogen monoxide is to be calculated.

Concept introduction:

One mole of every gas occupies the same volume at STP. This value is equal to $\text{22}\text{.4}\text{L}$ and is known as the molar volume of the gas. The number of particles present in $\text{1}\text{mol}$ of any gas is equal to $6.022\times {10}^{23}$ and this value is known as the Avogadro’s number.

Interpretation Introduction

(b)

Interpretation:

The number of molecules in $\text{70}\text{.5}\text{mL}$ of ammonia is to be calculated.

Concept introduction:

One mole of every gas occupies the same volume at STP. This value is equal to $\text{22}\text{.4}\text{L}$ and is known as the molar volume of the gas. The number of particles present in $\text{1}\text{mol}$ of any gas is equal to $6.022\times {10}^{23}$ and this value is known as the Avogadro’s number.