Question detail
Calculate the mass of 2 moles of sodium chloride (NaCl).
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Use of amount of substance in relation to masses of pure substances
Question
Calculate the mass of 2 moles of sodium chloride (NaCl).
Answer
The answer is 117 g.
Explanation
This uses Moles From Mass because the objective is about (HT only) Use the number of moles and relative formula mass to calculate the mass of a substance. The reasoning belongs to Moles (HT only) 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 HT only to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.3.
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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