In act 3, mary warren goes before judge hathorne to:
a. defend herself against abigail's charges of witchcraft
b. save john proctor's life after abigail cries him out
c. accuse abigail of bewitching her and betty in the forest
d. tell the truth about the girls' deception

The answer is

d. tell the truth about the girls' deception

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.