Chemistry Practice Problems Hess's Law Practice Problems Solution: At 1 atm pressure, the heat of sublimation of gall...

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Solution: At 1 atm pressure, the heat of sublimation of gallium is 277 kJ/mol and the heat of vaporization is 271 kJ/mol. To the correct number of significant figures, how much heat is required to melt 4.50 mol of gallium at 1 atm pressure?a. 250 kJb. 6 kJc. 274 kJd. 27 kJ

Problem

At 1 atm pressure, the heat of sublimation of gallium is 277 kJ/mol and the heat of vaporization is 271 kJ/mol. To the correct number of significant figures, how much heat is required to melt 4.50 mol of gallium at 1 atm pressure?

a. 250 kJ

b. 6 kJ

c. 274 kJ

d. 27 kJ

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