Molecular mass number elements in science

Dear Student,

molecular mass=1×27+1×31+4×16=122g/molvii.NaHCO3:sodium bicarbonatemolecular mass=1×atomic mass of Na+1×atomic mass of H+1×atomic mass of C+3×atomic mass of O=1×23+1×1+1×12+3××16=84 g/mol
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