Question detail

If you have 48 dm3 of a gas at room temperature and pressure, how many moles of gas do you have?

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

2 moles

Since 1 mole of gas occupies 24 dm3, 48 dm3 corresponds to 48 dm3 / 24 dm3 per mole = 2 moles.

Confusing Volume Units

Students often forget to convert cm3 to dm3 when calculating gas volumes, leading to incorrect answers.

Always remember to convert cm3 to dm3 by dividing by 1000 before using the volume in calculations.

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