CHEM1020 Chemistry Week 2

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If a gas has a volume of 500 mL at 20°C, what would its volume be at 40°C, assuming constant pressure and amount of gas?

250 mL

667 mL (correct)

500 mL

400 mL

What is Charles's Law primarily used to describe?

The relationship between pressure and volume of a gas at constant temperature

The relationship between pressure and temperature of a gas

The relationship between volume and temperature of a gas at constant pressure (correct)

The behavior of an ideal gas under different conditions

What is the primary difference between Charles's Law and Gay-Lussac's Law?

Charles's Law deals with volume, while Gay-Lussac's Law deals with pressure (correct)

Charles's Law deals with pressure, while Gay-Lussac's Law deals with volume

Charles's Law is used for real gases, while Gay-Lussac's Law is used for ideal gases

Charles's Law is used for ideal gases, while Gay-Lussac's Law is used for real gases

What is the pressure of the tire in Ahmed's Land Cruiser when the temperature is 25°C, given that it is 35 psi at 45°C?

28 psi Signup and view all the answers

What is the constant in the equation PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin?

R Signup and view all the answers

Which of the following statements is true about ideal gases?

They always obey the ideal gas law Signup and view all the answers

If 4.8 g of methane gas (CH4) is placed in a 2 L container at 25 °C, what is the pressure in atm?

2.7 atm Signup and view all the answers

What is the volume of 3.2 moles of gas at SATP conditions?

78.288 L Signup and view all the answers

What is the molar volume of a gas at STP?

24.45 L/mol Signup and view all the answers

If 2.4 moles of gas occupies 50 L at 1.5 atm pressure, what will be the temperature in °C?

600 °C Signup and view all the answers

Which gas law states that the volume of a gas is directly proportional to its absolute temperature at constant pressure?

Charles's Law Signup and view all the answers

If 3 moles of nitrogen gas (N2) are at 5 atm pressure, what will be the volume occupied at 27 °C?

58.8 L Signup and view all the answers

What property of gases allows them to take up the largest possible volume?

High compressibility Signup and view all the answers

Which statement best describes the behavior of gas particles according to the kinetic theory of gases?

Gas particles are always moving randomly. Signup and view all the answers

Which gas law describes the inverse relationship between pressure and volume of a gas?

Boyle’s law Signup and view all the answers

What happens to the total kinetic energy of gas particles during elastic collisions?

No change Signup and view all the answers

Which property helps distinguish gases from solids and liquids?

Don't take the shape of the container Signup and view all the answers

Which gas law combines the relationships between pressure, volume, and temperature?

Combined gas law Signup and view all the answers

CHEM1020 Chemistry Week 2 – GASES 1 Quiz

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