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Use a table of thermodynamic data to calculate the enthalapy (delta H) for the following three...

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Chemistry

Use a table of thermodynamic data to calculate the enthalapy(delta H) for the following three reactions:

Mg (s) + 1/2 O2 (g) --> MgO (s)

Mg (s) + 2 HCl (aq) -----> MgCl2 (aq) + H2(g)

MgO(s) + 2HCl(aq) ----> H2O(l) +MgCl2(aq)

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