Please help: Balance:
_MgCl2+_Cr(C2H302)3→ _CrCl3+ Mg(C2H302)2
I’ve got the answer for it. i just don’t understand how they got it.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

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