Question

define gram molecular mass of a substance in short?​

Answer 1

Answer:

gram molecular mass means the total mass of the molecules present in a compound

like in H2O the mass of H = 1 g

but there are 2 atoms so we will multiply it by 2

2 × 1 = 2

now here is only one atom of oxygen so the mass of O atom is 16 units or grams

so the total mass of compound is 18 grams or units