What mass of butane in grams is necessary to produce 1.5×103 kJ of heat? What mass of CO2 is produced? C4H10(g)+13/2O2(g)→4CO2(g)+5H2O(g),ΔHrxn=−2658 kJ Express the masses in grams to two significant figures separated by a comma. Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type mass of C4H10 , mass of CO2 =