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madam [21]
4 years ago
9

The molecular mass of sodium oxide (Na2O) is A. 61.97894. B. 38.98917. C. 22.98977. D. 45.97954

Chemistry
2 answers:
Marina86 [1]4 years ago
5 0

Answer is: The molecular mass of sodium oxide is A. 61.97894.

M(Na₂O) = 2 · Ar(Na) + Ar(O).

M(Na₂O) = 2 · 22.98976 + 15.9994.

M(Na₂O) = 61.97894; molecular mass of sodium oxide.

Ar is relative atomic mass (the ratio of the average mass of atoms of a chemical element to one unified atomic mass unit) of an element.

alexira [117]4 years ago
3 0
The answer is "A" because Na = 22.9 and O =16 so it is 22.9*2+16
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