Suppose that we use a heater to boil liquid nitrogen (n2 molecules). 4480 j of heat turns 20 g of liquid nitrogen into gas. note that the latent heat is equal to the change in enthalpy, and that liquid nitrogen boils at 77 k. the system is kept at a constant pressure of 1 atm. 20) assuming that you can treat the gas as ideal gas and that the volume of the liquid compute the binding energy of a nitrogen molecule in the liquid. (the binding energy is the difference in internal energy per molecule between the liquid and gas) approximately zero,

a. 9.4 x 10-21 j
b. 3.8 х 1027 j
c. 4.2 x 10-18 j
d. 10-20 j e. 2.1 x 10-19 j

The energy is

(a) is correct option

Explanation:

Given that,

Energy = 4480 j

Weight of nitrogen = 20 g

Boil temperature = 77 K

Pressure = 1 atm

We need to calculate the internal energy

Using first law of thermodynamics

Put the value into the formula

We need to calculate the number of molecules in 20 g N₂

Using formula of number of molecules

Put the value into the formula

We need to calculate the energy

Using formula of energy

Put the value into the formula

Hence, The energy is

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