Last updated on Oct 23, 2026

Limiting Reactants (AQA GCSE Chemistry Combined Science): Quizzes

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Limiting Reactants

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What is a limiting reactant?

Reactant used up first

What happens when the limiting reactant is used up?

Reaction stops

How many moles of $CuO$ are in $7.95 g$ if $Mr$ of $CuO$ is $79.5$ ?

$0.1$ moles

How many moles of $C$ are in $7.2 g$ if $Ar$ of $C$ is $12$ ?

$0.6$ moles

In what ratio do $CuO$ and $C$ react according to the balanced equation?

$2:1$

Which is the limiting reactant when $0.1$ moles $CuO$ reacts with $0.6$ moles $C$ ?

$CuO$

How many moles of $C$ are needed to react with $0.1$ moles of $CuO$ ?

$0.05$ moles

How many moles of $Cu$ are produced from $0.1$ moles of $CuO$ ?

$0.1$ moles

What mass of $Cu$ is produced if $0.1$ moles of $Cu$ forms and $Ar$ of $Cu$ is $63.5$ ?

$6.35 g$

What mass of $CO₂$ forms if $0.05$ moles are produced and $Mr$ of $CO₂$ is $44$ ?

$2.2 g$

Explore AQA GCSE Chemistry Combined Science Revision Notes by Topics

Measurement, Mass & Equations

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Measurement, Mass & Equations

Calculating Mass of Substances

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Measurement, Mass & Equations

Calculating Mass of Substances

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Measurement, Mass & Equations

Calculating Mass of Substances

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