# Given these reactions: A r 2B ∆H = 40

Mar 25th, 2015
Anonymous
Category:
Science
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Question description

. Given these reactions: A r 2B ∆H = 40 kJ B r C ∆H = -50 kJ 2C r D ∆H = -20 kJ Calculate ∆H for the reaction; D + A r 4C.

(A) –100 kJ

(B) –60 kJ

(C) –40 kJ

(D) 100 kJ

School: UIUC

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