Calculate the number of grams of oxygen required to convert 23.0 g of glucose to CO2 and H2O.
Mr of C6H12O6= (126)+(121)+(166)=180
Mr of O2=(162)=32
If 180 g of glucose requires 632 g of oxygen
38 g of glucose would need 632/180 38=40.53 g of oxygen
ans=40.53
mr of CO2=44
If 180 g of glucose gives 446 g of CO2
therefore 38 g of it gives 446/180 38 = 55.73 g of CO2