Question

What is the molar mass of calcium sulfate, CaSO4?

Answer 1

The Molecular formula of Calcium Sulphate = $CaSO_4$

= $Ca + S + O_4$

=$Ca + S + 4(O)$

Molecular Mass of $Calcium \ (Ca) = 40g/mol$

Molecular Mass of $Sulphur \ (S) = 32g/mol$

Molecular Mass of $Oxygen \ (O) = 32g/mol$

$\therefore$ The Molecular Mass of $CaSO_4 = [ (40) + (32) + 4(16) ] \ g/mol$

$= [ 40 + 32 + 64] \ g/mol$

$= 136 \, g/mol$