Question

Question #06fc8

Answer 1

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

Explanation:

`(g/1)/( g/m)` =# moles

Simply this compound fraction by multiplying both
top fraction `g/1` and the bottom fraction g/mol by
the faction moles/grams. This gives

`{(g/1) xx (m/g)}/ {(g/m) x (m/g)}`

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.