Question

How do i find the MOLAR MASS of Calcium Sulfate????????

Answer 1

Figure out what the formula is for calcium sulfate, then add up the atomic mass of all of the atoms used to assemble a molecule of calcium sulfate.

For example, let's do good old water (H2O)

2 hydrogen atoms @ 1.00794 g/mol
1 oxygen atom @ 15.9994 g/mol

molar mass of H2O = 2*1.00794 g/mol + 1*15.9994 g/mol = 18.0153 g/mol

Answer 2

The formula for Calcium Sulfate is CaSO4.
Then, its molar mass will be = [Molar mass of Ca] + [Molar mass of S] + [4 X Molar mass of O]
= 40.078 g/mol + 32.065 g/mol + 4*[15.9994 g/mol]
=40.078 g/mol + 32.065 g/mol + 63.9976 g/mol
= 136.1406 g/mol
Hope this helps...