10/11/22 - Moles and Molar Mass Flashcards
1
Q
What is a mole?
A
6.022 x 10^23 atoms, ions, molecules, particles, etc
2
Q
What is molar mass?
A
The mass of a mole of a substance’s entities.
3
Q
If one sulfur atom weighs 32.06 amu, what is the weight in grams of 1 mol of sulfur?
A
32.06 g
4
Q
If one H2O molecule is 18.02 amu, how much does one mole of H2O weigh?
A
18.02 g
5
Q
How do you find the molar mass of SO2?
A
(Molar mass of S) + 2(Molar mass of O)
6
Q
How do you convert moles to mass?
A
Mass (g) = moles x (grams/1 mol)
aka moles times molar mass
7
Q
How do you convert mass to moles?
A
Moles = mass(g) x (1 mol)/grams
8
Q
How do you convert moles to particles?
A
Number of particles = moles x (6.022 x 10^23 particles)
9
Q
How do you convert particles to moles?
A
Divide by Avogadro’s number
