1.

8-10. Mass fraction and mole fraction are defined as the mass or mole of the interested substance divided by the total moles or mass.
NaClO3 is given for the calculation.

A. n8. What is the mass fraction of Na?
B. 0.216
C. 0.418
D. 0.625
E. 0.856
Answer» B. 0.216


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