Question

pls answer this question fast​

Answer 1

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