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Write balanced equations for the following chemical reactions:

a) Solid lead(II) iodide forms when aqueous solutions of potassium iodide and lead(II) nitrate are mixed. Write the molecular equation and include state symbols.

b) Solid copper(II) hydroxide forms when aqueous solutions of sodium hydroxide and copper(II) sulfate are mixed. Write the net ionic equation and include state symbols.

c) Magnesium metal reacts with aqueous hydrochloric acid to produce hydrogen gas and aqueous magnesium chloride. Write the molecular equation and include state symbols.

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