Chemistry, asked by deerghakabdwal, 5 months ago

Please solve this chemistry question . Only relevant answers are preferred .

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Answers

Answered by MsMahi

1

I Hope You Understood It.

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Answered by MagicalBeast

1

Answer:

-279.4kJ

Explanation:

reverse (iii)

multiply (i) by 2

multiply (ii) by 3

add them

(+1365.6kJ ) + (-393.5×2) + (-286×3

= -279.4kJ

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