1. In reaction mixture 2g mg combine with 2 gram sulphur to give magnesium sulphide. which is limiting reagent and which reagent is in excess, and by how much amount of magnesium sulphide is produced??

2. Calculate the number of moles in 11.2l of CO2.

3. Calculate the number of moles in 3.01×10²³ molecules of CO2.​