Ammonia diffuses faster than hydrochloric acid .why ?
Lighter gases diffuse faster than heavier gases
Lighter gases diffuse slower than heavier gases
Ammonia is heavier than hydrochloric acid
HCl travels faster than NH3
The gas density d = ______________
mass/volume
pressure/volume
volume/mass
none of these
Temperature is measured in units of ___________.
Pascal
Joules
Kilograms
Kelvin degrees
Decrease in the volume of the same quantity of gas under pressure is known as ___________ .
compressibility
expandability
incompressibility
_________ explains the effect of temperature on the volume of a gas.
Charle's law
Boyle's law
Graham's law of diffusion
Van der waal's equation
The force of attraction between the molecules of gas is ___________ .
negligible
greater than that of liquids
greater than that of solids
According to Boyle's law ,''The volume of a given mass of gas is inversely proportional to it's ___________ at any given temperature .
pressure
volume
mass
________ law is used for detecting marsh gas in coal mines.
Boyle's
Grahams
Charles law
Rate law
A sample of helium has a volume of 500 cm 3at 373 k.Calculate the temperature at which the volume will become
260 cm3 . Assume that the pressure is constant .
129K
159K
194K
134K
At constant temperature , volume of given mass of gas _______ with increase in pressure.
increases
decreases
remain constant
none