Help me please!! Two gas samples are stored in a container with a solid barrier separating the gases. Gas A is at 125 °C,

Help me please!!

Two gas samples are stored in a container with a solid barrier separating the gases. Gas A is at 125 °C, and Gas B is at 80 °C.

What will occur when the solid barrier is removed?

The molecules of Gas A will collide and mix with Gas B molecules. Gas A and Gas B molecules will all speed up. The final temperature will be greater than 125 °C.

The molecules of Gas A will collide and mix with Gas B molecules. Gas A molecules will slow down, and Gas B molecules will speed up. The final temperature will be between 80 °C and 125 °C.

The molecules of Gas A will collide but not mix with Gas B molecules. There will be no changes in the temperature of either side of the container.

The molecules of Gas A will collide and mix with Gas B molecules. Gas A molecules will speed up, and Gas B molecules will slow down. The final temperature will be less than 80 °C.