When would it be most appropriate to use ppm to describe the concentration of the solutes in a solution?

select all that apply.

a) when listing ingredients on food packaging.

b) when describing very dilute solutions.

c) when describing environmental contaminants.

d) when describing solutions in which the solute is a solid.

fe 55.85 g/mol and h2o 18.02 g/mol.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?