Question detail
For Concentration of solutions, which option best supports this Unit 4.3 objective: Use grams per cubic decimetre, g/dm^3, as a unit of concentration?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Use of amount of substance in relation to masses of pure substances
Question
- A. 6 g
- B. 5 g
- C. 4 g
- D. 3 g
Answer
The answer is 6 g.
Explanation
The correct option is 6 g. This uses Concentration in g/dm3 because the objective is about use grams per cubic decimetre, g/dm^3, as a unit of concentration. The reasoning belongs to Concentration of solutions within Use of amount of substance in relation to masses of pure substances, so it should not be confused with nearby quantitative ideas such as mass, moles, concentration, yield, atom economy, or gas volume unless those are named in the objective. Use the focus term concentration to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.3. The other options are weaker because they either use the wrong formula, the wrong unit, a vague relationship, or the wrong quantitative context.
Common mistake
Misunderstanding Concentration Units
Students often confuse grams per cubic decimetre (g/dm^3) with other units of concentration, such as moles per cubic decimetre (mol/dm^3).
To fix this, students should practice converting between different concentration units and always check which unit is required for the specific calculation.
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