Question detail
For Moles (HT only), which option best supports this Unit 4.3 objective: (HT only) Use the number of moles and relative formula mass to calculate the mass of a substance?
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. 294 g
- B. 98 g
- C. 196 g
- D. 147 g
Answer
The correct option is 294 g.
Explanation
The correct option is "294 g" because it supports the approved learning objective: (HT only) Use the number of moles and relative formula mass to calculate the mass of a substance. The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Moles (HT only).
Common mistake
Confusing Moles and Mass
Students often confuse the number of moles with the mass of a substance, leading to incorrect calculations.
Remember that to find mass, you need to multiply the number of moles by the relative formula mass. Use the formula: mass = moles × relative formula mass.
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