The measurement 100.5 ml has how many significant figures?

The measurement 100.5 mL has 4 significant figures.

Explanation:

Significant figures are defined as the digits that provides information in order to maintain accuracy and precision of a measurement. Any nonzero number, trailing zeros with a decimal point and zeros between two numbers are recognizes as significant digits.

Whereas, the figures which do not contribute to sustain the accuracy and precision of the measurement are insignificant figures.

The leading zeros in any digit and the trailing zeros without decimal are considered as insignificant figures.

As in 100.5 1, two zeros and 5 after a decimal is significant figure which are 4 in total.

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explanation: