1.

FAH = a= d.P12. AH = bAH = dAH = C(B.On the basis of Hess's law of constant heat summation, choose the correct relation:(1) b = a -d + c(2) c = a - b + d(3) d = a + b + c(4) a-c = b + d​

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ANSWER:

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Explanation:

(4) a-c = B + d



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