| Atomic weights: H (1.008), C (12.01), N (14.01), O (16.00), F (19.00), S (32.07), Cl (35.45) |
Select the best single answer for each question:
1. The formula for potassium iodide is
| A) | KI2 | |
| B) | KI | |
| C) | KIO | |
| D) | KIO3 | |
| E) | IK2 | |
2. The formula for sodium carbonate is
| A) | NaC8 | |
| B) | NaCO3 | |
| C) | Na3CO3 | |
| D) | Na(CO3)2 | |
| E) | Na2CO3 | |
3. The formula for calcium hydroxide is
| A) | Ca(OH)2 | |
| B) | CaOH2 | |
| C) | CaOH | |
| D) | CaO | |
| E) | CaO2H2 | |
4. The formula for aluminum sulfide is
| A) | AlS | |
| B) | AlS2 | |
| C) | Al2S | |
| D) | Al2S3 | |
| E) | Al3S2 | |
5. The systematic name for SnCl4·4H2O is
| A) | tin chloride hydrate | |
| B) | tin chloride(IV) tetrahydrate | |
| C) | tin(IV) chloride tetrahydrate | |
| D) | tin hydrochlorate | |
| E) | tin tetrachloride tetrahydrate | |
6. Name the compound N2O5 .
| A) | nitrogen oxide | |
| B) | dinitrogen heptaoxide | |
| C) | dinitrogen pentaoxide | |
| D) | nitrogen pentaoxide | |
| E) | dinitrogen oxide | |
7. The formula for lithium oxide is
| A) | LiO | |
| B) | LiO2 | |
| C) | Li2O3 | |
| D) | Li2O | |
| E) | Li4O | |
8. How many moles of ammonium chloride are in 125 grams of the compound?
| A) | 1.86 | |
| B) | 2.34 | |
| C) | 2.00 | |
| D) | 2.45 | |
| E) | 2.16 | |
| 9. | A sample of the covalent compound sulfur hexafluoride contains 3.6 ´ 1021 sulfur atoms. How many fluorine atoms does the sample contain? |
| A) |
2.2 ´ 1022 |
|
| B) | 3.6 ´ 1021 | |
| C) | 2.2 ´ 1020 | |
| D) | 7.2 ´ 1022 | |
| E) | 6.0 ´ 1020 | |
