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- 1. Multiple Choice
? CaCl2 + ? Na3PO4 → ?Ca3(PO4)2 + ? NaCl
When balanced, what do the sum of the coefficients equal to?
5
6
11
12
- 2. Multiple Choice
?PCl5 + ?H2O → ?H3PO4 + ? HCl
When balanced, what does the sum of the coefficients equal to?
13
12
11
9
- 3. Multiple Choice
Tin II oxide reacts with hydrogen gas to produce tin metal and water. What type of reaction is this and what do the sum of the coefficients add up to?
4 - Synthesis
6- Synthesis
4- Single replacement
6- Single replacement
- 4. Multiple Choice
Once balancing the following chemical reaction, what do the coefficients add up to?
? CO2 + ? H2O →? C6H12O6 + ? O2
4
12
18
19
- 5. Multiple Choice
C2H6 combusts and releases a large amount of energy. What do the coefficients of the balanced chemical equation for this combustion reaction add up to?
7
8
19
10
- 6. Multiple Choice
Aluminum metal reacts with oxygen gas in a synthesis reaction. What would the coefficient of aluminum metal be in the balanced chemical reaction?
1
2
3
4
- 7. Multiple Choice
? CaCl2 + ? Na3PO4 → ?Ca3(PO4)2 + ? NaCl
What type of chemical reaction is this?
Synthesis
Decomposition
Single Replacement
Double Replacement
- 8. Multiple Choice
? NH3 + ? O2 → ? NO + ? H2O
When balanced, what do the sum of the coefficients equal to?
6
8
12
19
- 9. Multiple Choice
NaCl + AgNO3 → AgCl + NaNO3
What type of chemical reaction would this be classified as?
Synthesis
Decomposition
Single Replacement
Double replacement
- 10. Multiple Choice
CaCO3 → CaO + CO2
What type of chemical reaction would this be classified as?
Synthesis
Decomposition
Single Replacement
Double replacement
- 11. Multiple Choice
Zn + H2SO4 → ZnSO4 + H2
What type of chemical reaction would this be classified as?
Synthesis
Decomposition
Single Replacement
Double replacement
- 12. Multiple Choice
2Mg+ O2 → 2MgO
What type of chemical reaction would this be classified as?
Synthesis
Decomposition
Single Replacement
Double replacement
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