Homework Help: Chemistry

Posted by Jack on Sunday, October 3, 2010 at 11:58pm.

H2O (l) requires the largest amount of energy to raise the temperature of 25.0g H2O of the substance from 15.0 *C to 37.0 *C. Calculate the energy.

Hg (l) has the largest temperature change when 550 g of the substance absorbs 10.7kJ of energy. Calculate the temperature change.

please explain! thank you!

Chemistry - DrBob222, Monday, October 4, 2010 at 12:04am
H2O.
q = mass x specific heat x (Tfinal-Tinitial)
Solve for q.

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

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