Chapter 9: The Mole Concept (Definitions)

Question 1

Define Mole

4

Answer 1

• one mole of a substance is
• the amount of that substance that
• contains 6x10[23] particles
• of that substance

Question 2

Define Relative Molecular Mass

5

Answer 2

• the relative molecular mass of a compound is
• the average mass of one molecule of that compound
• compared with
• one twelfth of the mass of one atom of
• the carbon-12 isotope.

Question 3

How do you convert moles to number of atoms/molecules?

1

Answer 3

-multiply moles by 6x10 to the power of 23

Question 4

How do you convert number of atoms/molecules to moles?

1

Answer 4

-divide number of atoms/molecules by 6x10 to the power of 23

Question 5

How do you convert moles to mass?

1

Answer 5

-multiply moles by the relative atomic mass

Question 6

How do you convert mass to moles?

1

Answer 6

-divide mass by the relative molecular mass

Question 7

How do you convert moles to volume at s.t.p

1

Answer 7

-multiply by 22.4

Question 8

How do you convert volume at s.t.p to moles

1

Answer 8

-divide by 22.4