Measures of Concentration
What is the formula for molarity?
M=moles/liter (solute over solution)
What equation relates the concentrations and volumes before and after dilution?
M1V1=M2V2
State Boyle's Law
What’s the SI unit for force?
Game show
If a solution has 10.0 g of solute and 90.0 g of solvent, what’s its mass percent?
10%
How much of a 1.00 M solution is needed to make 250 mL of 0.100 M?
0.025 L (or 25 mL)
What is the ideal gas law?
PV=nRT
What’s Newton’s Second Law?
F=ma
Name a peer leader apart from Julian and Jesus
(John Benzene doesn't count)
Answer may vary
Choose a team
The youngest person in that team will swap teams with the youngest person in yours
If you dilute 50.0 mL of 0.200 M solution to 100.0 mL, what’s the new concentration?
0.1 M
At constant pressure, a gas at 300 K occupies 3.0 L. What volume at 600 K?
6 L
An object weighs 20 N on Earth. What’s its mass?
2.04 kg
Name everyone in the room (except peer leaders)
A lot of names
A solution contains 2.0 mol of solute in 4.0 kg of solvent. What’s the molality?
0.5 m (molal?)
It has a lower concentration
A 0.50 mol gas sample in 10.0 L at 300 K, find pressure. R=0.082
1.23 atm
Choose a team
That team gains 400 points
Guess Julian's favorite artist
Hint: First 2 or 3 songs that appear in the playlist were chosen by him
How many grams of NaCl are in 1.00 L of a 0.100 M NaCl solution?
(Molar mass = 58.44 g/mol)
5.84 grams
How much do 900 Liters of water weigh?
900 kg
0.082 L atm/mol K
What is the difference between a vector and a scalar?
A vector has direction and magnitude; a scalar is only a magnitude
Once again, when and where are Julian's office hours?
ACES C003, tuesdays 2:30-3:30