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May 29, 2015

Homework Help: Chemistry

Posted by Hailee on Friday, March 16, 2012 at 5:10pm.

Use Hess's law to calculate the enthalpy change for the reaction:
3C(s) + 3H2(g) C3H6(g)

Given the following thermochemical equations:

2C3H6(g) + 9O2(g) 6CO2(g) + 6H2O(l) H = -4116.0 kJ/mol

C(s) + O2(g) CO2(g) H = -393.51 kJ/mol

H2(g) + O2(g) H2O(l) H = -285.83 kJ/mol

please im soo confused!

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