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
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Born Haber Cycle concept. You can view video lessons to learn Born Haber Cycle. Or if you need more Born Haber Cycle practice, you can also practice Born Haber Cycle practice problems.
What is the difficulty of this problem?
Our tutors rated the difficulty ofAt 1 atm pressure, the heat of sublimation of gallium is 277...as medium difficulty.
How long does this problem take to solve?
Our expert Chemistry tutor, Dasha took 5 minutes and 25 seconds to solve this problem. You can follow their steps in the video explanation above.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Weinert's class at OKSTATE.