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Internal Energy

According to ...

Question

According to the following figure, the magnitude of the enthalpy change of the reaction
$A + B \to M + N i n k J {mol}^{1}$
is equal to . (Integer answer)

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Solution

$Δ H = E_{a f} - E_{a b} Δ H = 20 - 65 = - 45 k J / m o l$
Magnitude is 45

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