Magnesium carbonate decomposes when heated to produce magnesium oxide and carbon dioxide gas:
magnesium carbonate→magnesium oxide+carbon dioxide \text{magnesium carbonate} \rightarrow \text{magnesium oxide} + \text{carbon dioxide} magnesium carbonate→magnesium oxide+carbon dioxideIn a laboratory investigation, a student strongly heated 8.43 g of magnesium carbonate in a crucible until no further change in mass was observed.
The white powder of magnesium oxide remaining in the crucible was carefully collected and weighed.
The results recorded from the experiment are shown below:
State the meanings of the terms actual yield and theoretical yield.
157 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.