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 2.50 mol of gallium at 1 atm pressure?

15 KJ

Explanation:

We have given

at 1 atm

The heat of sublimation of Gallium =277 KJ/mol

heat of vaporization of Gallium =271 KJ/mol

So heat required to melt 2.50 mol of gallium at 1 atm

Heat Required=

So heat required to melt 2.5 mol of gallium is 15 KJ

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles