High School

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Determine the number of significant digits in each measurement:

100.5 L

A. 4 significant digits

B. 2 significant digits

C. 3 significant digits

D. 1 significant digit

Answer :

Final answer:

The measurement 100.5L has four significant digits, accounting for all non-zero digits and zeros between them as well as the trailing zero which indicates decimal precision.

Explanation:

The correct answer to the question of how many significant figures are in the measurement 100.5L is four significant figures. According to the rules of significant figures:

All non-zero digits are always significant (1 and 5 in 100.5).

Any zeroes between significant digits are significant (00 in 100.5).

Trailing zeroes in a decimal number are significant (0.5 indicates precision).

As such, the measurement has 1, 0, 0, and 5 as its significant digits, totaling to four. Therefore, the correct option is A. 4 significant digits.

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Rewritten by : Barada

4 significant figures. All figures are significant because the zeros are in between two significant digits