Question Detail
Question
Identify the number of significant figures in the following measurements: 0.00250 km, 100. g, 1.050 × 10⁻³ L, and 2500 m.
Correct Answer
Option C is the correct answer.
Detailed Explanation
0.00250 has 3 sig figs (leading zeros not counted, trailing zero after decimal counts). 100. has 3 sig figs (decimal point indicates trailing zeros are significant). 1.050 × 10⁻³ has 4 sig figs. 2500 m is ambiguous; without a decimal, trailing zeros are not significant, so it has 2 sig figs.
Hint
Apply the rules for significant figures, paying attention to decimal points.