chemistry
posted by Anonymous .
the temperature of 100g of water initaially at 25 degrees celsius in a calorimeter increases to 30 degrees celsius after adding a 20g piece of hot aluminum. what was the temperature of the aluminum before adding it to water?

[mass Al x sp. h. Al x (TfinalAlTinitialAl)] + [mass water x sp.h. water x (TfinalH2OTinitialH2O)] = 0
Solve for TinitialAl
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