Use a Hess cycle to calculate DELTArH0 for the following reaction using the data
provided:
2KHCO3 (s) ➡️K2CO3 (s) + CO2 (g) +H2O(l)
Substance DELTAHc0 KJ mol-1
KHCO3 (S)

-959

K2CO3 (5)

-1146
CO2 (g)

-394

H₂O (l)
-286