States of Matter
Name that phase change: Solid to a liquid
Melting
________ Law describes the relationship between pressure and temperature
Gay-Lussac's
The initial pressure of a gas is 2.8 atm at 340K. Calculate the temperature if the pressure decreases to 1.3 atm.
T2= 157.85 K
If you have 14 moles of a gas at a pressure of 5.6atm and a volume of 21 liters, what is the temperature?
T= 102.3K
Name that phase change: Liquid to Gas
Boiling
Which part on the graph represents a liquid?
III
_________ Law describes the relationship between pressure and volume
Boyles
The initial volume of a gas is 1.65 liters at 290K, calculate the final volume if the temperature increases to 360K.
V2= 2.048 Liters
If you have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 3.1 liters and a temperature of 310 K, how many moles of gas do you have?
n= 0.146 moles
Which Gas Law can be used to explain why a soda can will explode when opened after being shaken? Explain
Boyles - you decrease the pressure you increase the volume of the gas
What part of the graph represents evaporation?
IV
In Charles Law, when temperature increase volume _________
increases
The initial pressure of a gas is 5.1 atm at 5.7L. What is the volume at 6.3 atm?
If you contain 3.8 moles of gas in a container with a volume of 160 liters anda temperature of 127 C what is the pressure inside the container?
P = 0.77995 atm
The name of the phase change from gas to solid
Deposition
Melting an icecube
1. Do the particles speed up or slow down?
2. Is this a temperature change or phase change?
3. Is this exothermic or endothermic?
1. speed up
2. phase change
3. endothermic
A rice cooker (pressure cooker) is an example of which Gas Law? Explain.
Gay-Lussacs
As the pressure increases the temperature increases causing the rice to cook quicker
The initial temperature of a gas is 97 degrees C and occupies a volume of 15.1 Liters. Calculate the temperature at 10.5 liters.
T2=257.3 K
If there are 27.7 moles of gas at a pressure of 10.9 atm and a temperature of 156 C, what is the volume of the container that the gas is in?
V= 89.51 L
If you have 17 moles of a gas at a temperature of 607 C, and a volume of 88.89 liters, what is the pressure of the gas?
P = 13.817 atm
Cooling a warm liquid to 30 degrees Celsius
1. do the particles speed up or slow down
2. is this a temperature change or phase change?
3. Is this exothermic or endothermic?
1. slow down
2. temperature change
3. exothermic
A hot air balloon flying can be explained by which Gas Law? Why?
Charles - as the temperature of the gas is increased, the volume of the balloon also increases causing the balloon to float
The initial pressure of a gas is 13.8 atm at 87 C, what would the pressure be at 100 C?
P2= 14.31 atm
if you have 212 moles of a gas held at a pressure of 7.8 atm and a temperature of 627 C, what is the volume of the gas?
V= 2,008.23 L
Which gas law could be used to explain why blown up balloons will deflate in cold temperatures and reinflate in warmer temperature. Explain
Charles - temperature and volume
Decrease in temp = decrease in volume