What is the final volume of a 7.50 L gas sample that is subjected to a temperatire change from 35 degrees celsius to 50 degrees celsius and a pressure change from 9.20 atm to 3.20 atm?​

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

l dont know l am s sorry

you need to have a picture of the atom that way we can answer it