Question

Molecular mass of H2O

Answer 1

Here is your answer.

H = 1.
O = 16.

Molecular mass = 2 × 1 + 16.
= 18.

Hope it helps you.

Answer 2

Answer

18u.


here we find the molecular weight of H20.


when we find the molecular weight of any compounds then we adding the atmoic weight of those molecule.


the atmoic weight of hydrogen is 1 .

here two molecule of Hydrogen then we multiple the number of molecule with atmoic weight .

atmoic weight of hydrogen × no of molecule of hydrogen

2 × 1 = 2

again

the atmoic weight of oxygen is 16 .and the the symbol of oxygen is O.


when we find the Molecular weight of any compounds then we adding the atomic weight of those molecule.

like here,

H20 is compounds it's known as water.

Atmoic weight of 2 molecule of hydrogen + Atomic weight of oxygen.

2 + 16 = 18 u


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