Question

carbon, when burned completely, forms carbon dioxide. if 11.7g of carbon combines with 31.3g of oxygen, what mass of carbon dioxide will be produced?

Answer 1

C + O2   ------------------> CO2

12 g      32 g                            44 g

11.7g     31.3 g                           ??

here limiting reagent is C. so CO2 formed based on that.

12 g of C ----------------> 44 g of CO2

11.7 g of C --------------> ?? CO2

mass of CO2 = 11.7 x 44 / 12 = 42.9 g

mass of carbon dioxide will be produced = 42.9 g