False
In a solution mixture, the particles are very small. You won’t be able to see them
No acids have a ph of less than 7 our rain is around a six. dilated water is a 7 and any thing above a 7 is a base
Answer:
4.525% is the percentage by volume of oxygen in the gas mixture.
Explanation:
Total pressure of the mixture = p = 4.42 atm
Partial pressure of the oxygen = 
Partial pressure of the helium = 
(Dalton law of partial pressure)





According Avogadro law:
(At temperature and pressure)
Volume occupied by oxygen gas =
Total moles of gases = n = 1 mol
Total Volume of the gases = V


Percent by volume of oxygen in the gas mixture:

Sandalwood
Explanation:
this is the answer please mark me as brainleist
It is an example of physical change. The molecules are not changing, so it is not chemical, and a physical property is something that a physical thing has.