When carbon is burned in air carbon iv oxide gas is formed. C (s) + O2 (g) = CO2(g) ΔH = - 393.5 kj/mol The enthalpy change of the reaction is -393.5 j/mol which means that when one mole of carbon is completely burnt in air then 393.5 j of energy is evolved. Thus, 1 mole = -393.5 j , then for 480 kj = 480 × 1/393.5 = 1.2198 moles 1 mole of carbon iv oxide is equal to 44 g thus, 1.2198 moles will be 1.2198 × 44 = 53.6712 g of CO2
Octet, in chemistry, the eight-electron arrangement in the outer electron shell of the noble-gas atoms. This structure is held responsible for the relative inertness of the noble gases and the chemical behaviour of certain other elements.
