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 can Diamond and Graphite both be made of carbon but be so different?
Technetium is an element commonly used in medicine. A technetium atom is represented as ^99 _43 Tc. Give the number of protons, neutrons and electrons in this atom of technetium.
Why does the reactivity of the Group 1 elements increase as you go down the group?
Why is chlorine more reactive than iodine?