Question

7 multiple choice 1 point
water under atmospheric pressure boils at 212 degrees fahrenheit. what happens if you decrease the pressure?
the boiling point decreases.
the boiling point sometimes increases and sometimes decreases.
the boiling point increases.
the boiling point stays the same.
8 multiple choice 1 point
what is the purpose of a knockout drum or knockout pot?
to remove liquids from a gas
to remove gases from a liquid
to flush gas out of a pipe
to remove suspended solids from a gas

Explanation:

For question 7: Boiling occurs when vapor pressure equals external pressure. Lowering external pressure means water can reach this equilibrium at a lower temperature.
For question 8: A knockout drum is a process vessel designed to separate entrained liquid droplets from a gas stream using gravity and momentum.

Answer:

1. The boiling point decreases.
2. To remove liquids from a gas