What is the circulatory system? a. The system that helps you breathe.
b. The system that helps you move.
c. The system that transports blood.
d. The system that sends electrical signals.

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?

When a septic tank backs up a goes in to clean it out

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?