What happens to the overall mass during a chemical reaction?
It stays the same
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What must the overall charge of a compound always be?
Zero
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What mass of carbon is there in 4 moles of carbon dioxide?
44g
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Which defines the term: 'limiting reagent'?
The reactant that will run out first
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How would you work out the percentage yield of a reaction?
Actual yield/predicted yield x 100
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When molten magnesium chloride is electrolysed what is oxidised and what is reduced?
Chloride is oxidised, magnesium is reduced
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name the state symbols for each of the chemicals in the following reaction: hydrochloric acid reacts withcalcium carbonate to form calcium chloride, water and carbon dioxide.
Aqueous, solid, aqueous, liquid, gas
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1. I have a sample of hydrochloric acid of concentration 73g/dm3. What is the concentration in mol/dm3?
2mol/dm3
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When a reversible reaction is at equilibrium, how does the rate of the forward reaction compare with the rate of the reverse reaction?
The forward reaction and and reverse reaction occur simultaneously at the same rate
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What happens to weak acids in a solution?
They partly dissociate, at a slower than a strong acid
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Other cards in this set
Card 2
Front
What happens to the overall mass during a chemical reaction?
Back
It stays the same
Card 3
Front
What must the overall charge of a compound always be?
Back
Card 4
Front
What mass of carbon is there in 4 moles of carbon dioxide?
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