How many sodium atoms are present in 7Na_3PO_4?

1 Answer
anor277
Jun 24, 2016

Well, how many sodium atoms in one formula unit of Na_3PO_4?

Explanation:

I can count 3 in the one formula unit. In one mole of compound, there are also 3*mol of sodium.

Now you have quoted 7*Na_3PO_3, i.e. 7*"formula units" OR 7*"moles" of sodium phosphate. And thus 3xx7=?? "how many sodium atoms or how many moles of sodium atoms?"

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