The heat of combustion ( kJ `"mol"^(-1)`) is highest for

When 14 grams of ethene is completely burnt in oxygen, the heat evolved is 705 kJ. What is the heat of combustion (in kJ mol^(-1) ) of ethene ?

When 10 grams of methane is completely burnt in oxygen, the heat evolved is 560 kJ. What is the heat of combustion (in kJ mol^(-1) ) of methane?

The combustion of benzene(/) gives CO_2(g) and H_2O(l) Given that heat of combustion of benzene at constant volume is -3263.9 kJ mol^(-1) at 25^@C , heat of combustion (in kJ mol^(-1) ) of benzene at constant pressure will be (R = 8.314 JK^(-1) mol^(-1))

The heat of formations for CO_(2)(g),H_(2)O(l) and CH_(4)(g) are -400kJ"mol"^(-1), -280kJ"mol"^(-1) and -70kJ"mol"^(-1) respectively. The heat of combustion of CH_(4) in kJ"mol"^(-1) is

When 10g of methane is completely burnt in oxygen the heat evolved is 560kJ. What is the heat of combustion (in kJ mol^(-1) of methane ?