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...(adsbygoogle = window.adsbygoogle || []).push({});

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

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Enthalpy AP Chemistry

**Physics Forums | Science Articles, Homework Help, Discussion**