# What is the atomic mass of calcium sulfate?

Dec 25, 2016

$M \left(C a S {O}_{4}\right) = M \left(C a\right) + M \left(S\right) + 4 \times M \left(O\right)$
$= 40.08 + 32.07 + 4 \times 16.00 = 136.15$