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August 1, 2014

Homework Help: chem

Posted by Bogdanam on Wednesday, December 15, 2010 at 11:37am.

The heat of combustion of bituminous coal is 2.50 104 J/g. What quantity of the coal is required to produce the energy to convert 137.7 pounds of ice at 0.00C to steam at 100.C?
specific heat (ice) = 2.10 J/gC
specific heat (water) = 4.18 J/gC
heat of fusion = 333 J/g
heat of vaporization = 2258 J/g
A) 7.52 kg
B) 0.832 kg
C) 1.044 kg
D) 5.64 kg
E) 1.88 kg

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