#### corabelle

Hello! My first time on here but having massive troubles with my AP Chemistry homework and need help. I have a question that gives four different reactions and I am asked to calculate the (delta)H for each of them. I am given no more information. I am not sure how to go about the problem...

I have the idea that for each reaction to add together the enthalpy values for the products and subtract from that the sum enthalpys for the reactants....but I do not know where to obtain or calculate these values.

I am online now and will be until this is finished - my MSN is forest_angel@hotmail.com if you'd rather do that than post on here - but I could REALLY use some help on this and I'd appreciate a response asap if anyone has ANY idea or ANY advice.

Thanks again!!

-Cora

I have the idea that for each reaction to add together the enthalpy values for the products and subtract from that the sum enthalpys for the reactants....but I do not know where to obtain or calculate these values.

I am online now and will be until this is finished - my MSN is forest_angel@hotmail.com if you'd rather do that than post on here - but I could REALLY use some help on this and I'd appreciate a response asap if anyone has ANY idea or ANY advice.

Thanks again!!

-Cora

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