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July 28, 2015

Homework Help: chemistry

Posted by mohd on Sunday, April 11, 2010 at 3:57pm.

these are my three thermochemical equations
2Cu(s)+S(s) give Cu_2S(s) delta H -79.5 KJ
S(s)+O_2 give SO_2(g) -297 KJ
Cu_2S(s)+2O_2(g) give 2CuO(s)+SO_2(g)
how i calculate standard enthalpy of formation in Kj per mol of CuO(s)?
please dont give the answer only guid me please

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