12.0 g of carbon reacts with 32.0 g of oxygen to form 44.0 g of Co2. if we react 20.0 g of oxygen with 20.0 g of carbon,how many grams of carbon will be used up?..... i have no clue where to start... can u just tell me the steps to solve similar problems like this

Answer 1

The ratio of C to O2 has been given as 12/32=3/8
So if you have 20g of O2, how much C would have been used up? Calculate then how much C would be left.