A sample of gas at 6.0 atm and 5.0 °C increases in temperature to 35.0 °C. Using Gay Lussac's Law, what is the new pressure 35 atm
6.6 atm
5.4 atm
42 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

i think its 100.

hope this !