i have a bunch of hw from 5 other classes. i’m gonna pull and all nighter so can someone please help and contribute!!!

i’ll give a brainist :)

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Why does his teacher ask him to balance the equation by including the correct coefficient

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.