Chapter 1, Problem 4CP

Interpretation Introduction

Interpretation:

The diameter of an aluminum atom is $\text{250}\text{pm}$.  The number of aluminum atoms placed end-to-end to make a chain of aluminum atoms of $\text{1}\text{ft}$ long has to be given.

Concept Introduction:

The conversion factor used to convert picometer into feet is

  $\begin{array}{l}\text{1}\text{pm}\text{=}{\text{10}}^{\text{-12}}\text{m}\\ \text{0}\text{.914}\text{m}\text{=}\text{1}\text{yd}\\ \text{1}\text{yd}\text{=}\text{3}\text{ft}\\ \text{conversion}\text{factor:}\\ \text{=}\frac{{\text{10}}^{\text{-12}}\text{m}}{\text{1}\text{pm}}\text{×}\frac{\text{1}\text{yd}}{\text{0}\text{.914}\text{m}}\text{×}\frac{\text{3}\text{ft}}{\text{1}\text{yd}}\end{array}$