Question: i am not sure how to solve these problems! please explain and answer. thankyou so much Use standard enthalpies of formation to calculate rH for

i am not sure how to solve these problems! please explain and answer. thankyou so much

and answer. thankyou so much Use standard enthalpies of formation to calculate

Use standard enthalpies of formation to calculate rH for the following reaction. C(s)+H2O(g)CO(g)+H2(g) Express your answer using one decimal place. Use standard enthalpies of formation to calculate rH for the following reaction. N2O4(g)+4H2(g)N2(g)+4H2O(g) Express your answer using one decimal place

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