The gases listed are at standard temperature and pressure
• 1 mol of Co, gas
• 1 mol of N, gas
• 2 mol of O, gas
Which statement is correct?
The volume of 1 mol of Co, is greater than that of more
The volume of 1 mol of Co, is greater than that of moto
The volumes of 2 mol of O, and 1 moto goes are the same
The volumes of 1 mol of Co, and 1 mol of Ne gases are the same

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

d.) circle motion requires a force to give it a centripetal acceleration.

the solar system used to have much dust particles option no d