Question

a student records a measurement as 0.0700 g. how many significant figures are in this measurement, and which digits are estimated? 2/10 4 significant figures: 0, 7, 0, and 0 3 significant figures: 7, 0, and 0 2 significant figures: 7 and 0 1 significant figure: 7

Explanation:

Step1: Recall significant - figure rules

Non - zero digits are always significant. Leading zeros (zeros before non - zero digits) are not significant. Trailing zeros in a number with a decimal point are significant.

Step2: Analyze 0.0700 g

The leading zeros (the two zeros before 7) are not significant. The non - zero digit 7 and the two trailing zeros after 7 are significant. So, there are 3 significant figures.

Answer:

3 significant figures: 7, 0, and 0