Question

how to calculate molar mass

Answer 1

Go to periodic table and determine the atomic mass average (atomic weight) of each element. Multiply each atomic mass by the number of atoms in the formula. Add up the results of step three: 2.015+32.066+63.998 = 98.079 = molar mass of sulfuric acid.
hope it helps you

Answer 2

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Molar mass

As the molecules are made of atoms, they also have their own mass. The mass of the molecule of an element or compound is measured in the C-12 scale and hence called relative molecular mass.The Relative Molecular Mass of a molecule is the ratio between the mass of one molecule of the substance to 112th mass of an atom of Carbon -12.Relative Molecular Mass is only a ratio. So, it has no unit. If the molecular mass of a com-

Let's take an example "Ca3 (PO4)2"

meathod to calculate:-

Atomic masses of:-

Ca = 40

P = 30

O = 16.

Gram molar mass of Ca3 (PO4)2

♠40 × 3) + [30 + (16 × 4)] × 2

♠120 + (94 × 2)

♠120 + 188

Gram molar mass of Ca3(PO4)2 = 308 g