How are a persuasive essay and expository essay different?

Persuasive essays involve you having to convince someone of something, using ethos, pathos and logos. which is credibility (ethos), emotion ( pathos) , and logos ( logistics)

Expository essays deal with giving information for instance how to make a Pb and j. the purpose of the essay is to educate the reader.

i believe the answer is a

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.