A compound is found to contain 30.7% Sulfur, 23,3% Magnesium and 46% Oxygen. What is the empirical formula of the compound?

  1. Change % of elements in to moles: 30.7 mol of S, 23.3 mol of Mg and 46 mol of O2.
  2. Find the mass of each of the elements: 30.7 mol / 32.06 g/mol = 0.96 g of S;  23.3 mol / 24.31 g/mol = 0.96 g of Mg;  46 mol / 16.00 g/mol = 2.88 g of O2;  
  3. Divide the masses by the smallest mass: 0.96/0.96 = 1; 0.96/0.96 = 1; 2.88/0.96 = 3
  4. The empirical formula of this compound is MgSO3
Answered by Henry K. Chemistry tutor

14461 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

Types of chemical bonds


When both sodium and Hydrochloric acid are added to a test tube, what will be observed?


Explain how a catalyst can effect the rate of a forward and reverse reaction.


Discuss the trend in first ionisation energies across the second period of the periodic table.


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences