Question

how many significant figures does the following measurement have: 0.998005 m

Explanation:

Step1: Recall significant - figure rules

Non - zero digits are always significant. Leading zeros (zeros before non - zero digits) are not significant. Trailing zeros (zeros after non - zero digits) are significant if there is a decimal point.

Step2: Analyze the number 0.998005

The non - zero digits 9, 9, 8, 5 are significant. The two zeros between the 8 and 5 are also significant because of the decimal point.

Answer:

6