how many atoms are in 1.50 mol Na?

Answer 1

In one mole of anything there is an avagadros number amount.

avagadros number = 6.022141523

so in one mole of Na there are 6.022141523 atoms of Na, just as in one mole of uranium there are 6.022141523 atoms of uranium, etc...

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Answer 2

To do this, you need to know the atomic weight of the element you're dealing with, found on any Periodic Table. The atomic weight is the mass in grams of the element in one mole - this will provide you with a conversion factor. So take the measurement in moles and multiply it by the atomic weight to convert to grams. Really what you're doing is dividing the number by 1 mole, and multiplying it by the equivalent of one mole, the atomic weight. That's the thought process behind unit analysis and how you get your "units to cancel".
In this case, the answer is about 34.49 grams Na.

Answer 3

Atomic Mass of Na: 23.0 grams

1.50 moles × (6.02 × 1023 atoms) = 9.03 × 1023atoms

Answer 4

1.50 moles sodium (6.022 X 10^2/1 mole Na)

= 9.03 X 10^23 atoms of sodium

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Answer 5

1.50 moles Na x 22.9 g/mole = 34.4 g (3 significant figures)

Answer 6

The answer is: 9,033.10 23 atoms.

Answer 7

9.33 atoms

Answer 8

16

Answer 9

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