Assuming equal concentrations, arrange these solutions by ph.

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.