Be sure to answer all parts. When 0.126mol of carbon is burned in a closed vessel with 6.20g of oxygen, how many grams of carbon dioxide can form? g2 Which reactant is in excess, and how many grams of it remain after the reaction? g Be sure to answer all parts. A mixture of 0.0389g of hydrogen and 0.0193mol of oxygen in a closed container is sparked to initiate a reaction. How many grams of water can form? gH2O Which reactant is in excess, and how many grams of it remain after the reaction? hydrogen oxygen g