[فيتو]

The diameter of an atom is approximately 1 ´ 10-7 mm. What is this diameter when expressed in nanometers?
الجواب d



1. How many micrometers in 0.5 centimeter?
A. 500 µm B. 5 x 10-4 µm
C. 5 x 106 µm D. 5 x 103 µm

الجواب D
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