Review on Significant Figures and statistical evaluation of analytical data

Question 1

TRUE or FALSE

• Disregard all initial zeros.

Answer 1

TRUE

Question 2

Disregard all final zeros unless they follow a decimal point: True or False?

Answer 2

true

Question 3

All remaining digits including zeros between nonzero digits are significant: true or false?

Answer 3

True

Question 4

How many significant figures are in the following data?

1. 25.00 mL = _______
2. 3050 mm = _______

Answer 4

1. 4 sig. fig.
2. 3 sig. fig.

Question 5

8.73 + 3.8 + 1.025 = ______

Answer 5

13.6