Respuesta :

Answer:

The mass of 4.5 moles of sodium fluoride is 189g.

Explanation:

Answer: 103.5 g Na

Explanation: 1 mole of Na is equal to its molar mass which is 23 g.

Solution:

4.5 moles Na x 23 g Na / 1 mole Na

= 103.5 g Na

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