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How many significant figures are in each of the following numbers? (Assume that each number is a measured quantity).

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How many significant figures are in each of the following numbers? (Assume that each number is a measured quantity).

(a) 4.003 (b) 6.023 x 1023

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(a) Four - The zeros are significant figures.

(b) Four - The exponential term does not add to the number of significant figures.

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