Chapter 3, Problem 3.31P

Interpretation Introduction

Interpretation:

The number of ferrous ion $\left({\text{Fe}}^{2+}\right)$ in one molecule of hemoglobin $\left(\text{molar mass }=6.8\times {10}^4\text{ g/mol}\right)$ is to be calculated.

Concept introduction:

The SI unit for amount of substance is $\text{mol}$. The mass and molar mass of a substance is used to calculate the amount of substance. The formula to calculate moles from the mass and molar mass is as follows:

$\text{Amount}\left(\text{mol}\right)=\left(\text{Mass}\left(\text{g}\right)\right)\left(\frac{1\text{ mol}}{\text{No}\text{. of grams}}\right)$