A measurement reads 0.00250 L with three significant figures. If represented as 2.50 × 10^-3 L, how many significant figures does this representation have?

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Multiple Choice

A measurement reads 0.00250 L with three significant figures. If represented as 2.50 × 10^-3 L, how many significant figures does this representation have?

Explanation:
In scientific notation, the number of significant figures is determined by the digits in the coefficient. The coefficient here is 2.50, which has three digits, so it has three significant figures. The exponent (-3) only indicates scale and does not affect the count of significant figures. Therefore, 2.50 × 10^-3 L carries three significant figures, same as the original 0.00250 L.

In scientific notation, the number of significant figures is determined by the digits in the coefficient. The coefficient here is 2.50, which has three digits, so it has three significant figures. The exponent (-3) only indicates scale and does not affect the count of significant figures. Therefore, 2.50 × 10^-3 L carries three significant figures, same as the original 0.00250 L.

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