Moles Equations

Question 1

Number of particles/molecules/atoms equation:

Answer 1

No. of particles/molecules = moles(mol) x 6.02x10 23

No. atoms:
Mass/Mr = mol
Mol x 6.02x10 23 = molecules
No. Atoms (ie N2 = 2 atoms) x molecules =No. atoms

Question 2

Rearrange the equation for the no. of particles

Answer 2

No. of particles = moles x 6.02x10 23
Moles = no. of particles/ 6.02x 10 23

Question 3

Mass equation:

Answer 3

Mass = moles(mol) x Mr(g mol-1)

Question 4

Rearrange the equation for mass:

Answer 4

Mass = moles x Mr
Moles = mass/ Mr
Mr = mass/ moles

Question 5

Equation for volume:

Answer 5

Volume = mole(dm3) x 24( g mol-1)

Question 6

Rearrange the equation for volume:

Answer 6

Volume = mole x 24
Mole = volume/ 24

Question 7

Equation for moles in solution:

Answer 7

Moles = concentration x volume

Question 8

Rearrange equation for moles in a solution:

Answer 8

Moles = conc x vol
Conc = moles/ vol
Vol = moles/ conc

Question 9

Equation for mass concentration:

Answer 9

Mass conc(g dm-3) = conc(mol dm-3) x Mr(g mol-1)

Question 10

Arrange the equation for mass concentration:

Answer 10

Mass conc(g dm-3) = conc(mol dm-3) x Mr( g mol-1)
Conc = mass conc/ Mr

Question 11

What are the 3 equations for moles?

Answer 11

Mol = vol/ 24
Mol = mass/ Mr
Mol = conc x vol

Question 12

The ladder equation:

Answer 12

Mass = Mr x n
n = conc x vol
vol = n x 24

Question 13

How to get gas volume from moles?

Answer 13

Moles x 24

Question 14

How to get moles from gas volume?

Answer 14

Volume/ 24

Question 15

How to get moles from solution volume?

Answer 15

Vol x conc

Question 16

How to get solution volume from moles?

Answer 16

Moles x conc

Question 17

How to get no. of particles from moles?

Answer 17

Moles x 6.02x10 23

Question 18

How to get moles from no. of particles?

Answer 18

no. of particles x 6.02x10 23

Question 19

What is the equation for room temperature and pressure?

Answer 19

Vol = moles x 24