What does below chemistry rebus means?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

What does below Rebus mean ?

esgg sgeg gegs gsge

Find the value of "?" in the ball picture Riddle below:

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

There was once a troop of 5 elves. The 5 elves were very dedicated on finding the magical treasure of 1000 coins. However, being elves, they were super geniuses, very greedy and they did not hesitate in taking lives of other elves. The 5 elves were named Aye, Bee, Cee, Dee and Ee, ranked from high to low respectively, from Aye to Ee. One fine day, their efforts brought results and they found 1000 coins. Now they had to split it in between them as per their ranks. The lowest ranked elf has to make the proposal. If the proposal is accepted by majority, it is agreed, or the suggesting elf is killed.

What proposal should elf Ee make ?