February 19, 2017

Homework Help: ap chem

Posted by lily on Thursday, October 4, 2007 at 6:53pm.

calculate the enthalpy of formationof solid MgOH2, given the following data:

2Mg(s) + O2(g)-> 2MgO(s) heat:-1203.6
Mg OH2(s) -> MgO(s) +H2O(l) heat: 37.1
2H2(g)+ O2(g) -> 2H2O(l) heat: -571.7

what equation would they want the three equations to develop into and which ones would you flip/multiply?

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