Chapter 5, Problem 40E

Complete the table.

Formula	Number of ${\text{SO}}_{\text{4}}{}^{\text{2}}$units	Number of sulfur Atoms	Number of Oxygen Atoms	Number of Metal Atoms
${\text{CaSO}}_{\text{4}}$	_____	_____	_____	_____
${\text{Al}}_{\text{2}}{{\text{(SO}}_{\text{4}}\text{)}}_{\text{3}}$	_____	_____	_____	_____
${\text{K}}_{\text{2}}{\text{SO}}_{\text{4}}$	_____	_____	_____	_____