Amount of Substance (Quantitative Chemistry)

Question 1

What is a mole?

Answer 1

Number of particles (atoms, ions or molecules) in a substance

Question 2

One mole contains

Answer 2

6.02 × 10 23 atoms per mole

Question 3

Sodium

Answer 3

1 mole of sodium atom contains 6.02 × 10 23 atoms
The relative atomic mass of sodium is 23.0
One mole of sodium atoms has a mass of 23.0g

Question 4

amount (mol) =

eg number of moles of carbon dioxide in 33g of the compound

Answer 4

mass of substance (g)
________________________

atomic (or formula) mass (g/mol)

33
___
44* *COx 12 + (16 x2)
= 0.75mol