What does below chemistry rebus means?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

People put me on the table and cut me but do not eat me. What am I?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

What does this Rebus Picture mean?

What does Alexander the Great and Winnie the Pooh have in common?