Physical Chemistry 1: Avogadro’s number multiple choice questions

avogadros number multiple choice questions

This quiz consists of 10 Avogadro’s number multiple choice questions for the AQA AS and A-Level Chemistry specification.

Some of these questions are pretty basic and will give you a chance to make sure you understand the calculations. Others are more similar to the style and level of difficulty of the multiple choice questions you’ll be given in the AS and A-level Chemistry exams.

This means that some of these questions are straightforward, some of them are horrible. You need to know how to do all of them by the time the exams come around though, so if there’s anything you can’t do (even if it seems a bit weird) make sure you work backward from the answer and figure out why the answer is what it is.

Who are these questions for?

Though they’re based on the AQA specification, they’re also appropriate for students studying other exam boards. Avogadro’s number MCQ calculations are particularly popular with the Edexcel international A-level specification, so if that’s what you’re studying these will help you.

Do you need a tutorial as well as the questions?

If you’re a bit unsure of Avogadro’s number calculations. or you have no clue where to start with them, you’ll find these multiple choice questions alongside a tutorial here.

Avogadro’s number calculations MULTIPLE CHOICE QUESTIONS

If you’re using this as a test, allow yourself around 11-12 minutes to answer these questions. If you’re using them to learn from, feel free to use your textbook to help you.

As always with Chemistry, make sure you have your periodic table and your calculator handy.

1. How many atoms are in 0.600 moles of Helium?

Correct! Wrong!

2. How many atoms are in 0.200 moles of Cl2?

Correct! Wrong!

3. How many molecules are in 1.61 x10-3 moles of ethene?

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4. How many iron ions are in 0.500 moles of Fe2O3?

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5. How many molecules are present in 5.00 kg of O2?

Correct! Wrong!

6. A sample of SO2 contains 5.00 x1023 molecules. How many moles are present in this sample?

Correct! Wrong!

7. How many hydroxide ions are present in 10g of Barium hydroxide?

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8. What is the mass of one atom of nitrogen?

Correct! Wrong!

9. What is the mass of 1 molecule of BF3?

Correct! Wrong!

10. 1 molecule of Cl2. has a mass of 1.16 10-22. Which isotopes are present in this molecule?

Correct! Wrong!

Avogadro's number calculations
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