# Question 06fc8

Dec 8, 2016

Divide the number of grams by the grams per mole of the element or compound required.

#### Explanation:

$\frac{\frac{g}{1}}{\frac{g}{m}}$ = moles

Simply this compound fraction by multiplying both
top fraction $\frac{g}{1}$ and the bottom fraction g/mol by
the faction moles/grams. This gives

$\frac{\left(\frac{g}{1}\right) \times \left(\frac{m}{g}\right)}{\left(\frac{g}{m}\right) x \left(\frac{m}{g}\right)}$

The numerator simplifes as moles ( the grams divide out)

The denominator simplifies as 1 ( the grams and moles divide out)

This leaves moles as the answer.