Molar Mass
What is the molar mass of Li?
7.0 g/mol
What is a mole?
It's a counting unit to communicate quantity
What term is used to describe how many particles are present in 1.0 mol of any substance?
Avogadro's number
At STP, how much volume does a 1.0 mol sample of any gas occupy?
22.4 L
What do we do at the beginning and end of every class period?
The B Page
What is the molar mass of KF?
58.0 g/mol
How many moles of Li are in 14 g of Li?
2.0 moles
If you are provided the number of moles in a sample, do you need the identity of that sample to determine the number of particles present? Explain.
No because avogadro's number tells us how many particles are present within any number of moles regardless of the identity.
If you have a balloon filled with 0.50 moles of He gas, how much volume does that balloon have?
11.2 L He
What is Mr. Chance's girlfriends name?
Madeline
What is the molar mass of CuCl2?
134.5 g/mol
How many moles are in 25.0 g HCl?
0.68 mol
How many particles are present in 1.0 moles of He?
6.02 x 10^23 molecules
If you place 20.0 g of O2 gas in a tire at STP, how much volume is inside that tire?
14.0 L O2
What ion was responsible for the blue color in our mole ratio lab?
Cu
What is the molar mass of CuNO3?
125.5 g/mol
1.88 mol
How many particles are present in 3.5 g Zn?
3.24 x 10^22 particles
A balloon, at STP, occupies 50.3 L. How many particles of N2 gas are present in the balloon?
1.35 x 10^24 particles
Name one of Mr. Chance's favorite pop figures. ***3 possible answers***
Zoro from One Piece
Legolas from Lord of the Rings
Naruto from Naruto
What pure substance has a molar mass of 238 g/mol?
Uranium
How many moles are in 100 g Ca(OH)2?
1.35 mol
9.41 x 10^22 particles
A balloon is filled with 15.0 g of CO2 and 10.0 g of Cl2. What is the total volume of the balloon at STP?
10.75 L
What would the identity of an unknown gas be if at STP 30.0 g of the gas occupied 9.46 L?
Cl2