How much thermal energy is needed to boil 2.65 kg of water at its boiling
point?
use q- mass x latent heat of vaporization,
properties of water
property
value
melting point
0°c
boiling point
100°c
cliquid
4.18 kj/(kg.°c)
latent heat of fusion
333 kj/kg
latent heat of vaporization
2260 kj/kg

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system