Answer:
Amount of necessary heat transfer, q =
Given:
Volume of liquid Nitrogen, V = 0.200 
Density of liquid Nitrogen, 
Temperature,
Temperature Rise, T' = 
Latent heat of Vaporization,
Specific heat capacity of gas, 
Solution:
Now, calculation of heat transfer required to evaporate liquid nitrogen and raise its temperature is given by:
(1)
Now, mass, m can be given by:

Now, from eqn (1):
q = 
That person would weigh 302 pounds
Answer: They are not isotopes of each other.
Explanation: An isotope is when they have the same number of protons but different number of neutrons. Atom A and Atom B have different amount of protons.
By definition it is known that force equals mass by acceleration. In other words F = m * a. To find the acceleration, you must clear the formula mentioned. Therefore, for a force of 190.08N and a mass of 28 Kg, we have that the acceleration is a = F / m = (190.08) / (28) = 6.79 m / s ^ 2