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The volume of a fixed amount of gas is doubled, and the absolute temperature is doubled. According to the ideal gas
law, how has the pressure of the gas changed?
It has increased to two times its original value.
It has increased to four times its original value.
It has decreased to one-half its original value.
It has stayed the same.
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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.

particle   p is an electron and particle q is a neutron

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