To Make Things Easier, The Following are the Molar Masses (grams/mol) for the Elements that will be used for this Exam:
H-1.01, B-10.81, C12.01, N-14.01, 0-16.00, Na-23.00, C-32.06, C-35.45, Mn 54.94, 1-126.90, Ba 137.33

Solve for Molar Mass
a) (NH₂)₂SO4 =
b) (NH4)₂CO3-
c) NaBO3-
d) BaSO4=
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8/1 mol
8/1 mol
8/1 mol
8/1 mol