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3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations

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Question 18

The label on a packet of glucose powder gives the chemical information below.

SubstanceFormula
GlucoseC6H12O6\text{C}_6\text{H}_{12}\text{O}_6C6​H12​O6​

Use the relative atomic masses in the table.

ElementRelative atomic mass (ArA_rAr​)
Hydrogen, H\text{H}H1
Carbon, C\text{C}C12
Oxygen, O\text{O}O16
a.

Calculate the relative formula mass (MrM_rMr​) for the formula on the label.

[1]
b.

Calculate the percentage of the relative formula mass that is due to oxygen.

[2]
Markscheme

3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations Questions

  1. GCSE
  2. /Chemistry
  3. /3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations

95 exam-style questions on AQA GCSE Chemistry 3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations, covering 3.1.1 Conservation of mass and balanced chemical equations, 3.1.2 Relative formula mass, 3.1.3 Mass changes when a reactant or product is a gas, and 3.1.4 Chemical measurements. Each one has a worked solution and a mark scheme showing where the marks go.

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