Numbers in Science

In correct scientific notation, if there are 6.022 x 10²³ atoms per mole of an elemental substance, how many atoms would there be in a sample containing 0.1 moles of that substance?

 (A) 6.022 x 10²² (B) 6.02 x 10²² (C) 6.0 x 10²² (D) 6 x 10²²

Solution: D

If you did not get this problem right, make a note to try problem 3 again and rework Numbers in Science.

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Shodor
in cooperation with the Department of Chemistry,
The University of North Carolina at Chapel Hill