Key equations

Question 1

Equation for rf value

Answer 1

rf value = distance travelled by ink / distance travelled by solvent (water/ethanol)

Question 2

Equation for moles with mass

Answer 2

moles = mass/Mr

Question 3

Concentration mass and moles

Answer 3

concentration = mass/volume = moles/volume

Question 4

Number of particles (avocado’s constant)

Answer 4

Num. of particles = moles x 6.02 x 10^23