Which answer does not describe this system at equilibrium? NO (g) + O2 (g) (arrows pointing opposite ways) 2 NO2 (g)

The rates of the forward and reverse reactions are equal.

The forward reaction does not go to completion.

The reaction is reversible.

The concentration of reactants and products are all equal.

HERE IS YOUR ANSWER

A system in equilibrium indicates that the rate of some forward process within the system is equal to the rate of the corresponding backward process.

This is true whether it is a phase equilibrium, thermal equilibrium, dynamic reaction equilibrium, etc.

1.cause they have wings

2.cause they are insects

3.cause they are

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