In the combined-gas law, n represents: a. Boltzmann's ...

[MirandaLo]

In the combined-gas law, n represents:
 
  a. Boltzmann's uni-versal gas constant. c. the number of moles of gas.
  b. the atomic mass of the gas. d. the partial pressure of a gas.

Question 2

The partial pressure of a gas can be obtained by doing which of the following?
 
  a. Multiplying the total mixture pressure by the percentage area a particular gas occu-pies
  b. Multiplying the atmospheric pressure by the percentage of water vapor present
  c. Subtracting the partial pressure of water vapor from the atmospheric pressure
  d. Dividing the total pressure of a gas mix-ture by the atmospheric pressure

[blakeserpa]

Answer to Question 1

ANS: C
Boltzmann's constant is represented as R. The combined-gas laws do not use the atomic mass or the partial pressure of any gas as a variable in any calculations presented in answers B and D.

Answer to Question 2

ANS: A
Dalton's law states that the sum of the partial pressures of a gas mixture equals the total pressure of the system. Therefore, the partial pressure of a single gas may be calculated by multiplying the percentage of the gas in the gas mixture by the total pressure.