Homework Help: chemistry

Posted by Ellie on Sunday, September 18, 2011 at 4:16pm.

A 51 kg person drinks 330. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 18% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in ascending is given by mgh, where m is the mass (in kilograms), g the gravitational acceleration (9.8 m/s2), and h the height (in meters.)]

chemistry - DrBob222, Sunday, September 18, 2011 at 4:25pm
330 g x 3.0 kJ/g x 0.18 = ?? kJ.
Substitute into mgh for work and solve for h
chemistry - Ellie, Sunday, September 18, 2011 at 5:26pm
It says that answer is off by a multiple of ten.

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