The pressure exerted by a gas at 24°C is 99kPa. if the amount of gas and volume remain constant, what pressure will the gas exert at 45°C?

The final volume of the gas is four times the initial volume and the gas is the same as the initial volume.

Explanation:

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

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.