Chemistry (PLEASE HELP ME)
posted by Angel .
1. According to the phase diagram for water, how is the state of water determined?
a. proceed up a vertical line at any given temperature
b. read the phase at the intersection of any given temperature and pressure
c. at a given pressure, proceed horizontally to the S-L or L-G line
2. Temperature is a direct measurement of the energy contained in a substance.
3. Why does an evaporating liquid cool down, according to the Kinetic Molecular Theory?
a. Heat is required to evaporate a liquid.
b. Heat is lost through elastic collisions.
c. The highest velocity molecules are lost.
d. Heat must be dissipated to break the liquid bonds.
the answer in number 1 is b