Name the Law
A gas decreases in volume when pressure increases, assuming temperature and moles are constant.
Boyle's Law
If temperature decreases, what happens to particle motion?
It slows down
A gas goes from 2.0 L to 4.0 L at constant temperature. What happens to pressure?
Pressure decreases by half (Boyle's Law says if volume doubles, pressure halves)
Why must temperature be in Kelvin for gas law calculations?
Because equations require absolute temperature.
What's my name?
Ms Russi! ₍ ᐢ.ˬ.ᐢ₎˚୨୧
A gas expands proportionally as temperature increases, assuming pressure is constant.
Charles' Law
Why does increasing moles increase pressure?
More gas particles = more collisions with the container walls per second = higher pressure
A gas at 300K is heated to 600K. What happens to volume (with constant pressure)?
Volume doubles (Charles's Law: V₁/T₁ = V₂/T₂ → temperature doubles → volume doubles)
Convert 100 C to Kelvin
373 K
What university do I go to AND what's my major?
University of Houston Biology Major!
A rigid container causes pressure to increase when temperature increases.
Gay-Lussac's Law
Which variable is held constant in Boyle's Law?
Temperature (T) and moles (n)
P1 = 1 atm, V1 = 2L, V2 = 4L.
Find P2!
0.5 atm
What is the value of R when pressure is in atm and volume is in liters?
0.0821 L·atm/mol·K
What was it called when a scuba diver holds their breath as they ascend?
Pulmonary barotrauma
A gas changes pressure, volume, and temperature but the amount of gas remains constant.
Combined Gas Law
Which variable is held constant in Charles' Law?
Pressure (P) and moles (n)
T1 = 300K, T2 = 450K, V1 = 2L.
Find V2!
3 L
Convert 652 mmHg to atm (760 mmHg = 1 atm)
0.858 atm
What's the name of the character on the discussion question slide at the beginning of the presentation?
Nick Wilde
A gas law that accounts for changing the number of particles and relates macroscopic variables to moles.
Ideal Gas Law
Explain why gases are compressible.
Gas particles are far apart with lots of empty space between them. Applying pressure pushes the particles closer together, reducing volume.
P = 3 atm, V = 2L, T = 300K.
Find n!
0.244 mol (PV = nRT → n = PV/RT = (3 × 2)/(0.0821 × 300) = 6/24.63 = 0.244 mol)
Name two different pressure units and explain when you might convert between them.
atm, mmHg, kPa
How many total slides are in this presentation? (Make your best guess!)
35