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The mole concept and chemical calculations - MYP Questionbank | RevisionDojo

Practice The mole concept and chemical calculations with authentic MYP MYP Chemistry exam questions for both SL and HL students. This question bank mirrors Paper 1, 2, 3 structure, covering key topics like atomic structure, chemical reactions, and organic chemistry. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of MYP examiners.

Type

Difficulty

Question 1

What is the approximate mass, in grams, of a single atom of carbon-12?

Question 2

To convert from the number of particles ( $N$ ) to the number of moles ( $n$ ), one must __________ by the Avogadro constant ( $N_A$ ).

Question 3

Which of the following describes the importance of mole-based calculations in 'Green Chemistry'?

Question 4

Which of the following is a common reason why the actual yield of a chemical reaction is often lower than the theoretical yield?

Question 5

In the reaction $2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}$ , if you start with $5.0 \text{ mol}$ of $\text{H}_2$ and $2.0 \text{ mol}$ of $\text{O}_2$ , how many moles of $\text{H}_2\text{O}$ can be formed?

Question 6

At STP, which of the following gas samples would occupy the largest volume? ( $A_{\text{r}}: \text{H} = 1, \text{He} = 4, \text{C} = 12, \text{O} = 16$ )

Question 7

A chemist calculates that a reaction should produce $50.0\text{ g}$ of product. After performing the experiment, the chemist collects $40.0\text{ g}$ of product. What is the percentage yield?

Question 8

A sample of nitrogen gas ( $\text{N}_2$ ) occupies $5.6 \text{ dm}^3$ at STP. How many moles of nitrogen gas are in the sample? (Assume molar volume $V_{\text{m}} = 22.4 \text{ dm}^3 \text{ mol}^{-1}$ )

Question 9

A gas sample with a mass of $8.0\text{ g}$ occupies a volume of $5.6\text{ dm}^3$ at STP. What is the molar mass ( $M$ ) of the gas? (Assume $V_m = 22.4\text{ dm}^3\text{ mol}^{-1}$ at STP)

Question 10

How many moles of particles are present in a sample containing $1.204 \times 10^{24}$ molecules of water?

Type

Difficulty

Question 1

What is the approximate mass, in grams, of a single atom of carbon-12?

Question 2

To convert from the number of particles ( $N$ ) to the number of moles ( $n$ ), one must __________ by the Avogadro constant ( $N_A$ ).

Question 3

Which of the following describes the importance of mole-based calculations in 'Green Chemistry'?

Question 4

Which of the following is a common reason why the actual yield of a chemical reaction is often lower than the theoretical yield?

Question 5

Question 6

At STP, which of the following gas samples would occupy the largest volume? ( $A_{\text{r}}: \text{H} = 1, \text{He} = 4, \text{C} = 12, \text{O} = 16$ )

Question 7

A chemist calculates that a reaction should produce $50.0\text{ g}$ of product. After performing the experiment, the chemist collects $40.0\text{ g}$ of product. What is the percentage yield?

Question 8

Question 9

A gas sample with a mass of $8.0\text{ g}$ occupies a volume of $5.6\text{ dm}^3$ at STP. What is the molar mass ( $M$ ) of the gas? (Assume $V_m = 22.4\text{ dm}^3\text{ mol}^{-1}$ at STP)

Question 10

How many moles of particles are present in a sample containing $1.204 \times 10^{24}$ molecules of water?

Type

Difficulty

Question 1

What is the approximate mass, in grams, of a single atom of carbon-12?

Question 2

To convert from the number of particles ( $N$ ) to the number of moles ( $n$ ), one must __________ by the Avogadro constant ( $N_A$ ).

Question 3

Which of the following describes the importance of mole-based calculations in 'Green Chemistry'?

Question 4

Which of the following is a common reason why the actual yield of a chemical reaction is often lower than the theoretical yield?

Question 5

Question 6

At STP, which of the following gas samples would occupy the largest volume? ( $A_{\text{r}}: \text{H} = 1, \text{He} = 4, \text{C} = 12, \text{O} = 16$ )

Question 7

A chemist calculates that a reaction should produce $50.0\text{ g}$ of product. After performing the experiment, the chemist collects $40.0\text{ g}$ of product. What is the percentage yield?

Question 8

Question 9

A gas sample with a mass of $8.0\text{ g}$ occupies a volume of $5.6\text{ dm}^3$ at STP. What is the molar mass ( $M$ ) of the gas? (Assume $V_m = 22.4\text{ dm}^3\text{ mol}^{-1}$ at STP)

Question 10

How many moles of particles are present in a sample containing $1.204 \times 10^{24}$ molecules of water?

The mole concept and chemical calculations Questionbank