chem h sig figs

Question 0

523.1

Answer 0

4

Question 1

Rule 1

Answer 1

All non zero numbers are significant

Question 2

Rule 2

Answer 2

All zeros that are sandwiched between other significant figures are significant

Question 3

20005

Answer 3

5

Question 4

Rule 3

Answer 4

Any zero that papers after the decimal place and a significant figure in front of it will be significant

Question 5

0.00025

Answer 5

2

Question 6

25.0

Answer 6

3

Question 7

Rule 4

Answer 7

Any zero that is at the end of a non decimal number will not be significant

Question 8

5000

Answer 8

1

Question 9

Multiplication and division

Answer 9

Find least number of sig. Figs. Then multiply or divide and round to the least number if sig. Figs.

Question 10

Addition and subtraction

Answer 10

Count least number of decimal places, add or subtract, round to the least number of decimal places