1 Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)  Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Amoxicillin fights bacteria in the body. Clavulanate potassium is a form of clavulanic acid, which is similar to penicillin. Clavulanate potassium fights bacteria that is often resistant to penicillins and other antibiotics.
Published: June 18, 2009. Amoxicillin-clavulanate is a strong combination antibiotic used to treat many different types of bacterial infections in children. The clavulanate makes it difficult for some resistant bacteria to withstand the amoxicillin, resulting in a very powerful antibiotic.