Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

TopicSkillDifficulty

12 questions

SA-9702-IG1-0021 markL1 FoundationCalculatorIdeal gas equation

A sealed rigid cylinder holds gas at

200

kPa and

27

°C. It's heated to

127

°C. Calculate the new pressure.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0031 markL1 FoundationCalculatorIdeal gas equation

A gas at constant temperature is compressed from

3.0

litres at

100

kPa to

1.2

litres. Calculate the new pressure.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0041 markL1 FoundationCalculatorThe mole

Calculate the number of molecules in

2.5

mol of gas, in units of

10^{24}

. (

N_A=6.02\times10^{23}

mol⁻¹)

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0061 markL1 FoundationCalculatorIdeal gas equation

Real gases behave most like an ideal gas at

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0091 markL1 FoundationCalculatorIdeal gas equation

For a fixed mass of ideal gas at constant pressure, volume is proportional to

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0121 markL1 FoundationCalculatorThe mole

One mole of any substance contains

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0012 marksL2 StandardCalculatorIdeal gas equation

A room of volume

50

m³ contains air at

1.0\times10^5

Pa and

20

°C. Calculate the number of moles of air. (

R=8.31

J mol⁻¹ K⁻¹)

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0052 marksL2 StandardCalculatorThe mole

Calculate the number of moles in

88

g of carbon dioxide (molar mass

44

g mol⁻¹), and hence the number of molecules, in units of

10^{24}

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0072 marksL2 StandardCalculatorIdeal gas equation

Calculate the volume occupied by

1.00

mol of ideal gas at

1.01\times10^5

Pa and

0

°C, in litres. (

R=8.31

J mol⁻¹ K⁻¹)

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0082 marksL2 StandardCalculatorIdeal gas equation

A container of volume

2.0\times10^{-3}

m³ holds gas at

300

K and

1.5\times10^5

Pa. Calculate the number of molecules, in units of

10^{22}

. (

k=1.38\times10^{-23}

J K⁻¹)

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0101 markL2 StandardCalculatorThe mole

Calculate the Boltzmann constant from

R=8.31

J mol⁻¹ K⁻¹ and

N_A=6.02\times10^{23}

mol⁻¹, in units of

10^{-23}

J K⁻¹.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-IG1-0113 marksL3 ExamCalculatorIdeal gas equation

A gas bubble of volume

2.0

cm³ forms at the bottom of a lake where the pressure is

3.0\times10^5

Pa and the temperature is

7

°C. It rises to the surface, where the pressure is

1.0\times10^5

Pa and the temperature is

27

°C. Calculate its volume at the surface.

Salam Academy Original Practice · Proposed mark scheme