Study the reaction. 2HCl (g)+l_2 (s)⇌2Hl (g)+Cl_2 (g)
When the reaction is at equilibrium, some amount of HI is added. The system then reaches equilibrium again.

How does the concentration of Cl2 change compared to the first equilibrium?

The concentration is the same.

The concentration is higher.

The concentration is lower.

The concentration is zero.

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.