Department of Chemistry and Physics |
Answers - Worksheet 2 |
Scientific Notation/Significant
Figures
|
1. Convert each of the following into scientific notation.
7.27 x 102
1.72000 x 105
9.84 x 10-4
2.000 x 104
1.4
2.560 x 1033
2. Convert each into decimal form.
15600 + 100
0.036
73690000 + 10000
590 + 10
0.000059
3. Calculate the following. Give the answer in correct scientific notation.
a) 9.434 x 1066 b) - 8.87 x 102
4. Calculate the following. Give the answer in correct scientific notation.
a) 7.16 x 1020 b) 1.1025 x 10130
5. Give the number of significant figures in each of the following.
a) 1.05 g 3
b) 0.0003040 mm 4
c) 29000 + 10 ft 4
d) 0.90 x 1045 L 2
e) the number of eggs (12) that make up a dozen infinite
6. Determine the answer for each of the following. Be sure to use the correct number of significant figures.
a) 45.3 b) 5.04
c) 9.9 x 103 d) 3
7. Round each of the following to 3 significant figures.
77.1 | 6.30 x 106 |
0.000234 | 10.2 |
2.90 x 1021 |