Thermochemistry Calculations Practice

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Calculate the energy released when 4570 g of iron cools from 1000 C to 20 C. The specific heat of iron is 0.45 J/(g.c)

-2015.37 KJ or -2015370J

Claculat the energy needed to heat 60 g of aluminum from 100 C to 250 C. The specific heat of Al is 0.89 J/(g.c)

8.01 KJ or 8010 J

How much heat is required to vaporize 343 g of liquid ethanol C2H5OH? (Hvap=38.6 KJ)

287 KJ

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