What is the total molecular mass of h²o?

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## Deepti29

Atomic mass of H=1u Atomic mass of O=16u Now, for H2O there are 2 Hydrogens and 1 oxygen So multiply the mass of Hydrogen with 2, mass of Oxygen with 1 and add both 1*2+16*1=2+16=18.

So,18.01528 g/mol is the molecular mass of water.

## Abhinav.arjun47

18.01534 grams/mole.

## Charu

Hence water has 2 hydrogen atoms and one oxygen atom. The atomic weight of hydrogen is 1.00797 and for oxygen the atomic weight is 15.9994. So the molar mass of H2O is 15.9994 + (2 x 1.00797) which equals 18.01534 grams/mole.