EASY
AS and A Level
IMPORTANT
Earn 100

Calculate the mass in grams of a single atom of uranium- 235 of mass 235u.

Important Questions on Ideal Gases

EASY
AS and A Level
IMPORTANT

A small pellet of uranium-235 has a mass of 20mg. For this pellet, calculate the number of uranium atoms.

EASY
AS and A Level
IMPORTANT

A small pellet of uranium-235 has a mass of 20mg. For this pellet, calculate the number of moles.

EASY
AS and A Level
IMPORTANT

It can be useful to recall that 1.0 kg of ordinary matter contains in the order of 1026 atoms. Making suitable estimates, test this statement.

EASY
AS and A Level
IMPORTANT
A balloon contains 0.04 m3 of air at a pressure of 120kPa. Calculate the pressure required to reduce its volume to 0.025 m3 at constant temperature.
EASY
AS and A Level
IMPORTANT
At what temperature (in K ) will 1.0 mol of a gas occupy 1.0 m3 at a pressure of 1.0×104 Pa ?
EASY
AS and A Level
IMPORTANT
Nitrogen consists of molecules N2. The molar mass of nitrogen is 28 g mol-1. For 100 g of nitrogen, calculate the number of moles.
EASY
AS and A Level
IMPORTANT
Nitrogen consists of molecules N2. The molar mass of nitrogen is 28 g mol-1. For 100 g of nitrogen, calculate the volume occupied at room temperature and pressure 20°C;1.01×105 Pa.
EASY
AS and A Level
IMPORTANT
Calculate the volume of 5.0 mol of an ideal gas at a pressure of 1.0×105 Pa and a temperature of 200°C.