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- 1. Multiple ChoiceWhat is the molar mass of table salt (NaCl)?116.886 g/mol35.453 g/mol22.990 g/mol58.443 g/mol
- 2. Multiple Choice
Which of the following is an example of synthesis?
Na + Br2 --> NaBr
KClO3 --> KCl + O2
HgO + Cl2-->HgCl + O2
Cl2 + NaBr --> NaCl + Br2
- 3. Multiple Choice
Balance this reaction:
____ Na3PO4 + ____ KOH ---> ____ NaOH + ____ K3PO4
1,3,3,1
1,3,2,1
2,3,3,1
1,1,3,1
- 4. Multiple Choice3Ca + 2AlCl3 --> 3CaCl2 + 2AlSynthesisDecompositionSingle diplacementDouble displacement
- 5. Multiple Choice3KOH + H3PO4 --> K3PO4 + 3H2OSynthesisDecompositionSingle displacementDouble displacement
- 6. Multiple ChoiceWhich reaction type is the following: C5H10O4 + O2 --> CO2 + H2ODecompositionSingle ReplacementCombustionDouble Replacement
- 7. Multiple ChoiceBalance this equation
_Zn+_HCl-->_ZnCl2 +_H21,1,2,11,1,1,21,2,1,12,1,1,1 - 8. Multiple Choice
What is the molar mass of Cl2?
17 g/mol
35.5 g/mo;
71.0 g/mol
89 g/mol
- 9. Multiple Choice
Calculate the molar mass of water (H2O).
10 g/mol
17 g/mol
18 g/mol
34 g/mol
- 10. Multiple ChoiceMolar mass is in units of ________.gramsgrams/molemolemoles/gram
- 11. Multiple Choice
How many moles are present in 32.3 grams of CO2? (Hint: the molar mass of CO2 is 44.01 g/mol)
44.01 moles
1421.52 moles
32.3 moles
0.73 moles
- 12. Multiple ChoiceWhich side of a chemical equation is the reactant side?Left (before the yields sign)Right (after the yields sign)
- 13. Multiple ChoiceWhich side of a chemical equation os the product side?Left (before the yields sign)Right (after the yields sign)
- 14. Multiple ChoiceWhat does the Law of Conservation of Mass state?Matter cannot be gained or lost in a chemical reaction.Matter can only be lost in a chemical reaction.Matter can only be gained in a chemical reaction.Matter can be gained and lost in a chemical reaction.
- 15. Multiple ChoiceNumber of H in 3(NH₄)₂CrO₄46824
- 16. Multiple Choice
Balance the following:
____ Fe + ____ Cl2 → ____ FeCl3
1,1,21,3,12,2,32,3,2 - 17. Multiple ChoiceAt the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?the product is doubledthe product is half the mass of the reactantsthe mass is the samethe mass changes depending on the reaction
- 18. Multiple Choice
Identify the type of reaction: KClO3 --> KClO + O2
synthesis
combustion
single replacement
decomposition
- 19. Multiple Choice
What is a mole?
6.022 x 1023 particles of any substance
A small burrowing animal
A dark spot on your skin
A spy
- 20. Multiple Choice
One mole is equivalent to how many liters at STP (standard temperature and pressure)?
6.02 x 1023 L
22.4 L
1 L
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