Calculate the relative formula mass of water.

The chemical formula for water is H2O, and this means it contains 2 hydrogen atoms and 1 oxygen atom. If you then look at the periodic table and find the relative atomic mass for each element you find that: Hydrogen = 1 and Oxygen = 16.So the relative formula mass of H2O is calculated by adding 16 (for the oxygen atom) and 1 (for the first hydrogen atom) and 1 (for the second hydrogen atom) which is 16 + 1 + 1 = 18.

Answered by Charlotte R. Chemistry tutor

15830 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

What is a titration reaction in acid-base chemistry?


Why are group 1 elements more reactive as you go down the group?


Which substance is oxidised in the reaction represented by the ionic equation below? Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)


What are Isotopes?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences