What does below chemistry rebus means?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

How can one talk without saying a single word?

What is the next shape from answers A, B, C, and D figure?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

The more of this there is, the less you see. What is it?

Which part of London exists in France as well ?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?