Posted by **Ana ** on Tuesday, May 28, 2013 at 12:04am.

18.5g Al is submerged in 20.2g of water with a total temperature of 27°C. How much energy in joules is absorbed by the Al if the temperature changes to 32°C ?

- chemistry -
**DrBob222**, Tuesday, May 28, 2013 at 2:12pm
This is similar to a limiting reagent problem. Al can absorb only as much heat as the water has to release; therefore, you must work two problems and determine if the water has enough heat to release for the Al to absorb all of it or not.

q Al = mass Al x specific heat Al x delta T. Solve for q.

or

q H2O = mass H2O x specific heat H2O x delta T.

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