If 3x = 12, then x = 4.

for a basic paragraph, your biography should probably include facts like:

date and place of birth (and death, if applicable)major achievements education work facts hope this and the answer for the first is d

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.