the mole and equations

Question 1

what do the big numbers represent?

Answer 1

number of moles

Question 2

when do reactions stop?

Answer 2

when one of the reactants has been used up

Question 3

what reactants that aren’t limiting called?

Answer 3

excess

Question 4

why are reactants added in excess?

Answer 4

to make sure the other reactant is used up

Question 5

what is the relationship between the amount of product and amount of limiting reactant?

Answer 5

directly proportional

Question 6

what volume does one mole of a gas occupy?

Answer 6

24dm³

Question 7

mole

Answer 7

6.022 x 10^23

Question 8

how to calculate number of atoms in mass sample

Answer 8

1. mol = mass/Mr
2. number = avogadro x mol