The number of moles of co2 that contains 16g of oxygen is:
(a) 0.25
(b) 0.5
(c) 1.00
(d) 1.50

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

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