Riddle: it's 7: 00 am. you are asleep and there is a sudden knock on the door. behind the door are your parents who came to have breakfast. in your fridge are bread, milk (pasteurized), juice, and a jar of jam. to answer, what will you open first?

the gas pressure p, gas volume v, and gas temperature t are given in the formula:   pv=nrt,

r is the gas constant, and n is the number of gas moles.

if the container is cooled and remains under atmospheric pressure, where r is a constant that does not change, the volume of the container remains the same, the conclusion is drawn that, with all other values ​​unchanged, the number of gas moles n, is decreases.

the right answer is a.