Select the best single answer for each question:
1. In scientific notation 1256.048 is
| A) | 1.256048 ´ 10-2 | |
| B) | 1.256048 ´ 102 | |
| C) | 1.256048 ´ 103 | |
| D) | 1.256048 ´ 104 | |
| E) | 1.256048 ´ 105 | |
2. How many significant zeros are there in 0.006090?
| A) | 1 | |
| B) | 2 | |
| C) | 3 | |
| D) | 4 | |
| E) | 5 | |
3. Evaluate 0.7300 ´ 8.1526 including the correct number of significant figures:
| A) | 6.000 | |
| B) | 5.9514 | |
| C) | 5.95 | |
| D) | 6.0 | |
| E) | 5.951 | |
4. Evaluate 23.314 – 17.4 + 0.1493 including the correct number of significant figures:
| A) | 6.063 | |
| B) | 6.06 | |
| C) | 6063 | |
| D) | 6.1 | |
| E) | 6.0633 | |
5. Give the number of protons in the nucleus of:
| A) | 92 | |
| B) | 238 | |
| C) | 146 | |
| D) | 330 | |
| E) | 119 | |
6. Give the number of neutrons in the nucleus of:
| A) | 87 | |
| B) | 33 | |
| C) | 27 | |
| D) | 60 | |
| E) | 30 | |
7. Give the number of electrons in the atomic ion:
| A) | 19 | |
| B) | 11 | |
| C) | 10 | |
| D) | 9 | |
| E) | 1 | |
8. What’s the volume 486.2 mm3 in cubic inches (in3) if 1 m = 39.37 in ?
| A) | 0.0297 in3 | |
| B) | 2967 in3 | |
| C) | 0.02967 in3 | |
| D) | 1.000 in3 | |
| E) | 4.629 ´ 106 in3 | |
