What does below chemistry rebus means?

Solve the equation in the image by looking at the pattern closely.

I look at you, you look at me, I raise my right, you raise your left. What am I?

How can you leave a room with two legs and return with six legs?

Using Only Five 5's and any mathematical operator make sum as 37

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

In the image below, can you find the value of an angle(y)

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

Can you count the number of triangles in the picture below?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?