Question

Relative formula mass- Calculate the relative formula mass of the foll
examples:
1) H₂O

Answer 1

The relative formula mass of H₂O can be calculated by adding the atomic masses of two hydrogen atoms and one oxygen atom in the molecule. The atomic mass of hydrogen is 1 and the atomic mass of oxygen is 16. So, the relative formula mass of H₂O is:

(2 x 1) + 16 = 18

Step-by-step explanation:

Answer 2

The relative formula mass of H₂O (water) is 18.02 g/mol.

Step-by-step explanation:

The relative formula mass of a compound is calculated by summing up the atomic masses of all the atoms in its formula. For example, the relative formula mass of H₂O (water) is calculated by adding the atomic masses of two hydrogen atoms (2x1.01) and one oxygen atom (1x16.00), resulting in a relative formula mass of 18.02 g/mol. This means that one mole of water molecules weighs 18.02 grams.