Which is the formula mass of na2so4?
answers are
119.06 amu125.98 amu142.05 amu174.12 amu

142.05 amu

Explanation:- Formula mass is the amount of a compound with the same mass in grams as the formula mass in amu.

It is the sum of atomic masses of all the atoms contained in the formula.

Mass of Na = 22.98 amu

Mass of S = 32.06 amu

Mass of O = 15.99 amu

Thus formula mass of

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