Answer:
air
Explanation:
A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.
Peanuts, or milk please leave like if right
B
375
325 + 50 = 375
just add them together and you get 375
Compound
Water is made up of two elements that are chemically bonded, which creates a compound
