Chapter 9, Problem 19QAP

Using the average atomic masses given inside the front cover of this book, calculate how many moles of each substance the following masses represent

l type='a'>

4.15 g of silicon, Si

2.72 mg of gold(III) chloride, ${\text{AuCl}}_3$

i>1.05 kg of sulfur, S1.000901 g of iron(III) chloride, ${\text{FeCl}}_3$

i>   $5.62\times {10}^3$g of magnesium oxide, MgO