Formula
What gas law name and/or equation uses Pressure and volume
Boyles Law
P1V1=P2V2
What is diffusion?
movement of particles from regions of higher concentrations to regions of lower concertration
what is the the STP of one mole of any gas
22.4 L
What unit of temperatuere is used for ALL calculations?
KELVIN
What Gas law name and/or equation uses Volume and temperature ?
V1/T1 = V2/T2
Charles Law
Adding gas to a container does what to the number of particles?
Increase the number of particles and increase collisions and increase pressure
2H2O2(l)-->2H2O (g)+O2(g)
Decompose 1.1 g of H2O in a flexible flask. What is the volume of O2 at STP?
hint:stoichiometry
1.1 g H2O2 x 1 mol H2O2/34 g H2O2 x1 mol O2/2 mol H2O2
x 22.4 L O2/1 mol O2=0.36 L O2 at STP
Ideal Gas Law
PV=nRT
What is Gay-Lussac gas law equation?
P1/T1 =P2/T2
Removing gas from a container does what to the container?
decreases number of particles, decrease number of collisons, decrease pressure
A balloon inflated in an air conditioned room at 27 degrees celcuis has a volume of 4.0 degrees celcius. The balloon is heated to a temperature of 57 degrees celcius. What is the new volume if the pressure remains constant?
CONVERT C TO K
4.0 L/300. K = V2/330.K
V2=4.4 L
Conversion of Atm to mmHg to kPa
1 ATM:760 mmHg:101.3 kPa
What is the combined Gas Law?
P1V1/T1 = P2V2/T2
If you increase volume what happens to pressure?
Decrease
How much N2 is required to fill a small room with a volume of 460 cubic feet (27,000L) to 745 mmHg at 25 degrees celcius
1. convert to proper units, KELVIN and ATM
use PV=nRT
or n=PV/RT
n=(0.98atm)(2 x 104L)/(0.0821 Latm/kmol)(298 k)
What is R in the ideal gas law?
number and UNITS FOR DOUBLES POINTS
0.0821L atm/ k mol
What is Graham's Law
rate for A/rate for B = SQUARE ROOT (M of B/ M of A)
Double the kelvin temp. does what to pressure?
Double the peressure (only works in kelvin)
A sample of helium gas has a volume of .180 L, a pressure of 0.800 atm and a temperature of 29 degress celcis. What is teh new temperature in degrees celcius of the gas at a volume of 90.0 mL and a pressure of 3.20 atm.
use combined gas law
and convert L to mL
3.20 atm x 90.0 mL x 302. K/ 0.800 atm x 180/mL
= 604 K
604-273=331 degrees celcius
equal volumes of gases ath the same T and P have the same number and molecules