Who wants to do a zoom im board please dont delete this im not a perv. i swear

ummm no one said u were a perv

Explanation:

this isnt a school question and unless your a wooden plank with hands your not board, your bored, feeling weary because one is unoccupied or lacks interest in one's current activity.

Explanation:

your welcome dummy

c is the answer because when something is left after something evaporates that shows the chemical change.

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.