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

Answer:

Explanation:

no of moles=given mass/molar mass

no of moles=150 g/207.19

no of moles=0.72

Answer 2

Answer:

We will use dimensional analysis to answer this question.

$150 g * \frac{1 g}{207.19 mol} = 0.724 mol$

The answer is 0.724 mol.