Question

a sample of lead had a mass of 150 g. The molar mass of lead is 207.19 g. How many moles of lead does the sample contain?

Answer 1

We will use dimensional analysis to answer this question.

`150 g * (1 g)/(207.19 mol) = 0.724 mol`

The answer is 0.724 mol.

Answer 2

Step-by-step explanation:

no of moles=given mass/molar mass

no of moles=150 g/207.19

no of moles=0.72