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September 16, 2014

Homework Help: chemistry

Posted by Anonymous on Wednesday, February 18, 2009 at 7:55pm.

When 0.638 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 104C is observed.
Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC.

The molar heat of reaction for the reaction of Ca(s) + 2H^+(aq) Ca^2+(aq) + H2(g)is _____kJ/mol.

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