`1.2` grams of carbon on combustion produces `"X"` of its oxide.The value of " `"X"` " is

A compound X reaction with CO_(2) present in air to from Y . Y one decomposition produces on oxide . The compound X is .

One mole of carbon undergoes incomplete combustion to produce carbon monoxide, Calculate (Delta H - Delta U) for the formation of CO at 298 K. Given R = 8.314 JK^(-1) mol^(-1) .

0.2 g of a an organic compound on couplete combustion produces 0.44 of CO_2 ,then precantage of carbon it is