When a sample of gas is placed into a container, it exerts pressure on the walls of the container. Which of the following postulates of the kinetic-molecular theory explains why the pressure in the container remains constant when kept at a constant temperature. a. The speed of gas particles increases as temperature increases.
b. Gases are made of tiny particles.
c. The particles of a gas are moving quickly and randomly.
d. The particles of gas collide with their container without losing momentum.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

we need the questions , i may then you.

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