3.1 Moles and amount of substance

Question 1

Moles =

Answer 1

Mass
_______
Mr

Question 2

What is the relationship between Avogadro’s constant and moles?

Answer 2

1 mole of any substance contains 6.02x 10^23 entities

Question 3

What does the Mr also represent

Answer 3

1 mole of any substance is its Mr in grams known as the Molar mass

Question 4

How to calculate no. of molecules

Answer 4

moles x avogadro’s constant

Question 5

How to calculate no. of atoms

Answer 5

moles x avogadro’s constant x no. of atoms per molecule