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

MCQ

Type

practice

Style

Topic

Use of amount of substance in relation to masses of pure substances

Question

116 g

The relative formula mass of sodium chloride (NaCl) is 58 g/mol. Therefore, 2 moles of NaCl would have a mass of 2 x 58 g = 116 g.

Confusing Mass and Moles

Students often confuse mass (in grams) with the number of moles when calculating the amount of substance.

Always remember to use the formula: moles = mass / relative formula mass, ensuring you convert mass to the correct unit before calculation.

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