pls answer this question fast
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Answer:
1075 is the ans
Explanation:
its too easy just see
first take 3 equation and reverse it when u reverse it it's enthalpy change sign change then multiply 2 equation by 2 then add 2 and 3 after adding 2 and 3 add 1 to it all the other compound cancel out and u get the enthalpy change the also add all these enthalpy and u will get ur ans