| Sections | |||
|---|---|---|---|
| Metal Alloys | 7 mins | 0 completed | Learn |
| Polyatomic Ions | 15 mins | 0 completed | Learn Summary |
| Naming Covalent Compounds | 6 mins | 0 completed | Learn |
| Naming Ionic Compounds | 36 mins | 0 completed | Learn |
| Naming Acids | 14 mins | 0 completed | Learn |
| Empirical Formula | 14 mins | 0 completed | Learn Summary |
| Combustion Analysis | 13 mins | 0 completed | Learn |
| Mass Percent Formula | 17 mins | 0 completed | Learn Summary |
| Balancing Chemical Equations | 8 mins | 0 completed | Learn |
| Functional Groups in Chemistry | 13 mins | 0 completed | Learn |
| Stoichiometry | 61 mins | 0 completed | Learn Summary |
| Additional Practice |
|---|
| Ionic and Covalent Bonds |
| Molecular Models |
| Limiting Reagent |
| Percent Yield |
| Additional Guides |
|---|
| Molecular Formula |
| Balancing Chemical Equations Worksheet |
| Theoretical Yield |
| Limiting Reactant |
Zinc (II) sulfide reacts with oxygen according to the reaction:
2 ZnS(s) + 3 O2(g) → 2 ZnO(s) + 2 SO2(g)
A reaction mixture initially contains 4.2 mol ZnS and 6.8 mol O2. Once the reaction has occured as completely as possible, what amount (in moles) of the excess reactant is left?
A. 1.5 mol
B. 0.5 mol
C. 6.3 mol
D. 0 mol
Enter your friends' email addresses to invite them:
Join thousands of students and gain free access to 46 hours of Chemistry videos that follow the topics your textbook covers.