An electrolyte with a pH less than 4 is a strong acid, that with pH range of 4 - 7 is a weak acid, that with 7 - 10 is a weak base, that with pH range of 10 - 14 is a strong base.
the molar mass of any element can be determined by finding the atomic mass of the element on the periodic table for example, if the atomic mass of sulfer is 32.066 amu, then it's molar mass is 32.066 g / mol