Question

Find the molecular mass of H2O

Answer 1

Answer:

Given,

Atomic mass of H = 1 - (2×1=2)

Atomic mass of O = 16

So , Molecular mass of H2O = atomic mass of H2 +

atomic mass of O = 2 +16 =18g

Answer 2

Molecular Mass is the mass of the elements present in a compound .

The H2O is water.

Two hydrogen & one carbon compound.

H2O = 2 × Hydrogen + Oxygen

• Hydrogen atomic mass = 1

• Oxygen atomic mass = 8 × 2 = 16

➝ H2O = 2 × 1 + 16

➝ 2 + 16

➝ 18 amu

H2O is devided in ratio of 2 : 1.

The H2O is water a universal solvent .

Hydrogen is the first element of periodic table .

Oxygen is 8th element of periodic table.

H - O - H

= H2O