Chemistry Test (Chapter 11)
What do barometers measure
Atmospheric pressure
For the balanced equation: 2CO(g) + O2 (g) > 2CO2(g), the ratio 2:1:2 refers to all of the following except... A. Moles B. Molecules C. Pressure D. Volumes
C
Gay-Lussac recognized that at constant temperature and pressure, the volumes of gaseous reactants and products in an equation...
Can be expressed as ratios of small whole numbers
The law that relates the temperature and volume of a gas to each other is known as...
Charles' Law
The ratios of the volumes of the gaseous reactants and products in a chemical reaction at constant temperature can be determined from the...
Coefficients in the balanced equation
Whose law states that the total pressure of a gas mixture is the sum of the partial pressures of the gases in it
Dalton's
What does Boyle's Law's graph look like
Downward curve; as "X" increases, "Y" decreases
What is the formula for pressure
Force/Area
The Law of Combining Volumes applies only to gas volumes that are...
Measured at constant temperatures and volumes
At constant temperature and pressure, Avogadro's Law states that gas volume is directly proportional to the...
Number of moles of a gas
What is the SI unit for pressure
Pascals
How is the Combined Gas Law expressed
(P1 x V1)/(T1) = (P2 x V2)/(T2)
How do you get from Celsius to Kelvin
*Degrees in Celsius* + 273 degrees = Kelvin
What is the pascal equal to
1 N/m^2
A sample of helium has a volume of 250ml when its pressure os 0.935 atm. If the temperature remains constant, what will the pressure of the gas be when it has a volume of 175ml
1.34 atm
A 10.2L canister of Oxygen gas contains 58.6 mol of gas at a temperature of 25 *degrees Celsius*. What is the pressure of this gas
141 atm; use R=(0.0821L x atm)/(mol x K)
That gas in an aerosol container is at a pressure of 3.5 atm at 24*degrees Celsius*. The caution on the container warns against storing it at temperatures above 95*degrees Celsius*. What would the gas pressure in the container be at 95*degrees Celsius*
4.34 atm
You collect 552ml of Argon gas at 23 *degrees Celsius* what volume will the gas occupy at 46 *degrees Celsius* of the pressure remains constant
595ml
What is 722 mmHg in torrs
722 torrs
Air is about 78% Nitrogen, 21% Oxygen, and 1% other gases. After all the Oxygen is removed from a sample of air in a glass tube and the pressure and temperature stay constant, the pressure exerted by the remaining air is...
Reduced by 21%
According to Avogadro's Principle, 1L of H2(g) and 1L of O2(g) at the same temperature and pressure have...
The same number of molecules
To determine the number of moles of a gas at STP when you are given the volume of a gas, use...
V/22.4L