Question detail

What is the mass of 3 moles of carbon dioxide (CO2)?

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

132 g

The relative formula mass of carbon dioxide (CO2) is 44 g/mol. Therefore, 3 moles of CO2 have a mass of 3 x 44 g = 132 g.

Confusing Mass and Moles

Students often confuse the mass of a substance with the number of moles when calculating masses from a balanced symbol equation.

To fix this, remember to use the relative formula mass to convert between mass and moles correctly, ensuring you apply the correct formula.

Flashcard 1 of 5

Press Space to flip, arrows to move