Amounts of Substances in Equations (AQA GCSE Chemistry): Flashcards
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10 cards from this deck
What do coefficients in balanced equations show
What do coefficients in balanced equations show
Ratio of moles of each substance
Formula: calculating moles from mass
Formula: calculating moles from mass
Moles = (or Ar for elements)
When to use Ar instead of Mr
When to use Ar instead of Mr
For elements
Moles of Mg in
Moles of Mg in
1 mole
Moles of HCl in
Moles of HCl in
2 moles
Moles of produced in
Moles of produced in
1 mole
Moles of formed in
Moles of formed in
1 mole
Moles in 6g of Mg (Mr = 24)
Moles in 6g of Mg (Mr = 24)
moles
What do mole ratios from equations help calculate
What do mole ratios from equations help calculate
Amounts of substances needed or produced in reactions
Divide mass by what to find moles
Divide mass by what to find moles
Mr (or Ar for elements)