Question

Which of these measurements is expressed to four significant figures?

A. 0.108 m

B. 16.530 m

C. 2.6 x 104 m

D. 5.300 x 10-7 m

Answer 1

A. 3 sig figs, because you count anything after a period, but not any leading 0s in front
B. 5 sig figs
C. 2 sig figs, scientific notation, you only count the decimal in front
D. 4 sig figs

Answer 2

Thank you so much!