Question detail
For Gas volumes and amount of substance, which ratio reasoning answer best supports this Unit 4.3 objective: (chemistry only) (HT only) Substitute numerical values into equations using appropriate units. (MS 3c)?
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 volumes of gases (chemistry only) (HT only)
Question
- A. 6 dm3
- B. Wrong ratio reasoning: confuses chemistry only with a nearby Unit 4.3 idea
- C. Wrong unit check: uses the wrong unit for Gas volumes and amount of substance
- D. Wrong calculation link: does not support (chemistry only) (HT only) Substitute numerical values into equations using appropriate units. (MS 3c)
Answer
The correct option is 6 dm3.
Explanation
The correct option is "6 dm3" because it supports the approved learning objective: (chemistry only) (HT only) Substitute numerical values into equations using appropriate units. (MS 3c). The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Gas volumes and amount of substance.
Common mistake
Incorrect Unit Usage
Students often forget to convert volumes from cm3 to dm3 when substituting values into gas volume equations.
Always check if the volume is in dm3; if it's in cm3, convert it by dividing by 1000 before substituting into the equation.
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