Chapter 3, Problem 3.105P

Interpretation Introduction

Interpretation:

The value of $x$ in $\text{narceine}\cdot x{\text{H}}_2\text{O}$ is to be determined.

Concept introduction:

Narceine is a narcotic in opium that crystallizes from solution to hydrate containing water.

The formula to calculate moles is as follows:

  $\text{Amount}\left(\text{mol}\right)=\frac{\text{mass}}{\text{molecular mass}}$        (1)

The formula to calculate number of molecules of water($x$) in a hydrate is:

  $x=\frac{{\text{mol of H}}_2\text{O}}{\text{mol of hydrate}}$        (2)