Question

Which is the molar mass of H2O?

Answer 1

Answer: The molar mass of water is 18 g/mol

Explanation:

Molar mass of a compound is defined as the sum of mass of every element each multiplied by the number of atoms of that element.

We are given a compound having chemical formula $H_2O$

Molar mass of hydrogen = 1 g/mol

Molar mass of oxygen = 16 g/mol

Mass of water = $[(2\times 1)+16]=18g/mol$

Hence, the molar mass of water is 18 g/mol

Answer 2

H=(2x1.008)=2.016
O= 15.999

15.999
+ 2.016
______
18.015 g/mol :)