2.4 g of magnesium reacts with 1.6 g of oxygen. What is the empirical formula of the oxide formed?
Ar of Magnesium = 24; Ar of Oxygen = 16
number of moles = mass divided by Ar
number of moles of Mg = 2.4/24 = 0.1
number of moles of Oxgen = 1.6/16 = 0.1
ratio of Mg to O = 0.1:0.1 = 1:1 So oxide produced is MgO
KT
Related Chemistry GCSE answers
All answers ▸How should I approach answering moles calculation questions?
Give the reagents and conditions needed to convert a secondary alcohol into a ketone. Name the process which occurs during the conversion.
Why is magnesium positioned in Group 2 of the periodic table?
What is Le Chatelier's principle and how do you apply it to reversible reactions?