Which of the following is true concerning water vapor?
a. It is a true gas.
b. It has a constant pressure.
c. It exerts a partial pressure.
d. It exists above its critical temperature.
ANS: C
Water vapor exerts a pressure (PH2O) that results from the continuous, random movement of water molecules. It is not a true gas and does not have a constant pressure. As the temperature of a gas increases, water vapor pressure increases and water molecules leave the liquid state through evaporation.
You might also like to view...
When patients refuse to disclose personal information, it is ultimately the physician's decision whether to accept the patient for treatment
Indicate whether the statement is true or false
The type of insurance that provides coverage for a designated period of time is:
A) medical insurance. B) special risk. C) short-term health insurance. D) long-term care.
A dropper that is marked with graduated measurements is:
A. conical B. a teaspoon C. a syringe D. calibrated
Amphetamines prevent the _________________ of excitatory neurotransmitters
Fill in the blank(s) with correct word