The Mole Basics
What number of particles are in 1 mole?
6.022 × 10²³
What is Avogadro’s number?
6.022 × 10²³
What is molar mass measured in?
g/mol
How many grams in 1 mole?
molar mass (g/mol)
In CO₂, how many O atoms per molecule?
2
What unit is used for amount of substance in chemistry?
mole (mol)
How many molecules are in 1 mole?
6.022 × 10²³ molecules
What is the molar mass of H₂O?
18.02 g/mol
Convert 18.0 g H₂O to moles
1.00 mol
In H₂O, how many moles of H per mole of H₂O?
2 mol H
What does 1 mole of any substance represent?
6.022 × 10²³ particles
How many molecules are in 2.5 moles?
1.51 × 10²⁴ molecules
What is the molar mass of CO₂?
44.01 g/mol
Convert 36.0 g H₂O to moles
2.00 mol
In Ca₃(PO₄)₂, moles of P in 1 mole compound
2 mol P
Why is the mole useful in chemistry?
converts between atoms, mass, molecules
Convert 3.0 moles to particles
1.81 × 10²⁴ particles
What is the molar mass of Ca₃(PO₄)₂?
310.18 g/mol
Convert 0.250 mol H₂O to grams
4.50 g
In Ca₃(PO₄)₂, moles of O in 2 moles compound
16 mol O
If you have 2 moles of atoms, how many atoms do you have?
1.204 × 10²⁴ atoms
Convert 7.25×10²³ particles to moles
1.20 mol
How many moles are in 50.0 g of water?
2.78 mol
How many grams are in 2.75 mol CO₂?
121 g
How many moles O in 0.85 mol Ca₃(PO₄)₂?
6.8 mol O