Question

Calculate the molar mass of H₂O

Answer 1

Molar mass of H2O =1×2+16
=18gm

Hope this helps! !

Answer 2

Atomic Number of Hydrogen is 1 and Atomic weight is also 1.

Atomic Number of Oxygen is 8 and we know that the formula of calculating molar mass/molecular weight = 2 x Atomic number. So, the molar mass of oxygen will be 8 x 2 = 16.

Now, Grand total of the Molar Masses of each atoms present in water molecule.

Hydrogen Molar Mass (H2) = 2

Oxygen Molar Mass (O) = 16

Total= 16+2 = 18