If the mole fraction of sodium is 0.25 in 9 moles of liquid carbon dioxide, what

Question

If the mole fraction of sodium is 0.25 in 9 moles of liquid carbon dioxide, what is the mass fraction of sodium?

Options:

A . 0.10

B . 0.15

C . 0.20

D . 0.25

Answer: Option B
Answer: (b).0.15

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