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1. Write a net ionic equation, including states for teh reaction of Cobalt (II) Chloride and Silver Nitrate

2. Circle the species in which nitrogen has the highest oxidation number

N2 NH3 HNO2 NO2- NANO3

3. Circle the compound that has the atom with the highest oxidation number?

CaS Na3N MgSO3 Al(NO2)3 NH4Cl

4. A 3.82g sample of magnesium nitride is reacted with 7.73 g of water.

Mg3N2 + 3H2O ------>2NH3 + 3MgO

The yield of MgO is 3.60g. What is the percent yield in the reaction?

5. Calculate the Heat of Reaction for the following reaction using Heats of Formation AND Bond Energies (using the tables and appendices in your book). Explain why there might be a difference in these calculated values.

2C6H6 (l) + 15O2 (g) -----> 12CO2(g) + 6H2O (l)

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