Homework Help: chemistry

Posted by edward on Sunday, November 15, 2009 at 10:15pm.

The reaction between 0.0272 g of Mg with an excess of water was carried out in an ice calorimeter. The volume of water decreased by 0.19 mL during the reaction.

a) Write the equation that occurs. Is it a redox?
b) Calculate the enthalpy of reaction?

i have no clue how to approach this questions....soo can someone show me how or give me the steps :) thx

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