Question

please please please answer correctly​

Answer 1

Explanation:

mass by mass percent =mass /total massx100

mass by the volume =volume /total volume x100

Answer 2

Answer:

The result is given as "mass/volume percentage". Such a convention expresses mass concentration of 1 gram of solute in 100 mL of solution, as "1 m/v %."

Explanation:

In chemistry, the mass concentration ρi (or γi) is defined as the mass of a constituent mi divided by the volume of the mixture V.

For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass concentration of a component in a mixture can be called the density of a component in a mixture. This explains the usage of ρ (the lower case Greek letter rho), the symbol most often used for density.

I HOPE THIS IS CLEAR TO YOU.