How many moles of water are produced from the following reaction, when 275 kJ of energy is given off?
4 NH + 3 O2 --> 2 N + 6 H,0 H = -1530 kJ

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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can you attach the

a electronegativity decreases beacuse the size of nucleus is bigger.