The relative formula mass of CaO is 56 and the relative formula mass of CO2 is 44. What is the mass of CaO that can be obtained from 200 g of CaCO3. CaO3 -> CaO + CO2

We are given the relative formula mass (RFM) of CaO and CO2, we should therefore calculate the RFM of CaO3:

RFM of CaCO3 = 40 + 12 + (16 x 3) = 100

If we look at the reaction in the question, we can see one CaCO3 goes to one CaO and one CO2.

Effectively, in 200 g we have 2 lots of CaCO3, therefore we can make 2 lots of CaO and two lots of CO2.

Therefore we can make 2 x 56 g = 112 g of CaO from 200g of CaCO3.

Answered by Joshua H. Chemistry tutor

27831 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

Explain the physical properties of graphite in terms of its structure and bonding


Why does iodine havea higher boiling point compared to chlorine?


How do you calculate the relative atomic mass of an element


What are the 3 main variables within a scientific experiment?


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences