Pressure
The SI unit of pressure
Pascals
What is the formula for Boyle's Law?
P1V1=P2V2
What is the conversion factor that should be used to determine the number of moles of a gas at STP when you are given the volume of the gas?
1 mol / 22.4 L
The passage of gas particles through a small opening is called
effusion
Most manometers and barometers contain this element
mercury
The law that relates the temperature and volume of a gas to each other is known as
Charle's Law
The ratios of the volumes of the gaseous reactants and products in a chemical reaction at constant temperature and pressure can be determined from the
mole ratios
coefficients in the balanced equation
Which of these gases effuses the slowest under the same conditions?
Ne , NH3, NO2, CO2
NO2
the formula for pressure
force/area
How do you convert from Celsius to Kelvin?
add 273 to Celcius
the ratios in a balanced equation refer to the following except :
volumes, moles, pressures, molecules
pressures
A sample of helium gas has a volume of 250 mL when its pressure is 0.935 atm. If the temperature remains constant, what will the pressure of the gas be when it has a volume of 175 mL ?
1.34 atm
the unit of pressure known as the pascal is equal to
hint: think about the units of force and area
1 N/m2
The scientist who recognized that at constant temperature and pressure, the volumes of gaseous reactants and products can be expressed as ratios of whole numbers
Gay-Lussac
the law of combining volumes applies only to gas volumes measured at constant ____ and ____
temperature and pressure
You collect 552 mL of argon gas at 23.0º C. What volume will the gas occupy at 46.0ºC if the pressure remains constant.
595 mL
In a sample of air at exactly 1 atm containing a mixture of N2O, O2, and CO2,
PCO2 = 0.323 torr and PN2= 593.525 torr. What is the partial pressure of O2?
166.152 torr
At constant temperature and pressure, gas volume is directly proportional to the
number of moles of gas
According to Avogadro's law, 1 L of H2 and 1 L of O2 at the same temperature contain equal numbers of ____
molecules
The gas in an aerosol container is at a pressure of 3.50 atm at 24.0ºC. The caution on the container warns against storing it at temperatures above 95ºC. What would the gas pressure in the container be at 95ºC ?
4.34 atm