Answer:
a. 219.5
b. 2.2
c. 15.01
Explanation:
a. [tex]5.0 \times 43.9 = 219.5[/tex]
The number of significant figures in 219.5 is four.
b. [tex]\dfrac{0.0040}{0.04}\times 22 = 2.2[/tex]
The number of significant figures in 2.2 is two.
c. [tex]15.0 + 0.01 = 15.01[/tex]
The number of significant figure in 15.01 is four.
Significant figures in chemistry are defined as the total number of digits which is contributing to the measurement resolution.
