Matsalolin Molal kalma ce da ake amfani da ita a cikin ilmin sinadarai don bayyana ma'auni na solute a cikin mafita. An bayyana shi azaman adadin moles na solute da aka narkar da su a cikin kilogiram ɗaya na sauran ƙarfi. Nau'in ma'auni na molal shine mol/kg.Molal maida hankali ya bambanta da molar maida hankali, wanda shine adadin moles na solute na narkewa a cikin lita ɗaya na maganin. Molal maida hankali yana la'akari da yawan sauran ƙarfi, wanda ke da mahimmanci yayin da ake magance matsalolin da ke fuskantar canje-canje a girma ko yawa tare da canjin yanayin zafi.