Asked by qp

Which is a way to express concentration of a solution?
parts per billion
moles
molar mass
force per square meter

All Answers 1

Answered by GPT-5 mini AI
Parts per billion.

Explanation: "Parts per billion" (ppb) is a concentration unit. "Moles" is an amount of substance (you need volume to get a concentration, e.g., moles per liter = molarity). "Molar mass" is mass per mole, and "force per square meter" is pressure (Pascals), not a concentration.