1. Tin (II) Chloride is mixed with Manganese metal, as shown below. Which of the following compounds will exist afterwards? SnCl2 + Mn --> ?

Select one or more:
a. SnCl2
b. MnCl2
c. SnCl and MnCl
d. SnMn
e. Cl2

2.What is the oxidation number for Cobalt in the following compound?

CoSO4

Select one or more:
a. 0
b. 1
c. 2
d. 3
e. 4

3. Which of the following compounds will exist after Nickel (II) Oxide is mixed with Calcium as shown below?

NiO + Ca --> ?
Select one or more:
a. O2
b. CaO
c. NiCa
d. CaO2

4. In the following reaction, which element is being reduced?

C2H2 + O2 --> H20 + CO2

Select one or more:
a. O
b. H
c. C
d. C and H

5. When the following two aqueous solutions are mixed, what will happen?

Na3PO4 (aq) + Al(NO3)3 (aq) -->

Select one or more:
a. AlPO4 will appear as a precipitate.
b. PO4NO3 will appear as a precipitate.
c. AlNa3 will appear as a precipitate.
d. NaNO3 will appear as a precipitate.
e. No reaction. The ions will remain dissolved in water.

6. When these aqueous solutions are mixed, which of the following will happen?

AgNO3 (aq) + KI (aq) -->

Select one or more:
a. No reaction. The ions remain in an aqueous state.
b. KNO3
c. INO3
d. AgK
e. AgI