Posted by Amy on Saturday, May 7, 2011 at 12:56am.
Heat lost by spoon = heat gained by water
Use that heat, the aluminum temperature drop, and the specific heat of aluminum to get the mass.
Ignore the styrafoam mass. It acts as an insulator to keep the heat inside, and weighs very little.
So do I multiply all of the numbers (heat, temp. and specific heat) to get my mass? And for the temp. should I convert it to K? Or leave it to C?
0.98*0.18*21-84 = 21-12*4.186*Ms
11.1132 = 37.674Ms
Ms = 0.29 Kg
my answer wasn't right. what am i doing wrong?
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