Question detail
What is 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
What is the mass of 2 moles of sodium chloride (NaCl)?
Answer
117 g
Explanation
This question tests the understanding of how to calculate mass from moles using the relative formula mass. Sodium chloride has a relative formula mass of 58.5 g/mol, so 2 moles would be 117 grams.
Common mistake
Confusing Mass and Moles
Students often confuse the mass of a substance with the number of moles, thinking that the mass in grams is the same as the number of moles.
Remember that the mass of one mole of a substance in grams is equal to its relative formula mass. Always use the relative formula mass to convert between mass and moles.
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