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Using the activity series, write a balanced chemical equation for the following reactions:

1. iron metal is added to a solution of copper (II) nitrate

2. zinc metal is added to a solution of magnesium sulfate

3. hydrobromic acid is added to tin metal

4. hydrogen gas is bubbled through an aqueous solution of nickel (II) chloride

**Identify all of the phases in your answer. If no reaction occurs, simply write, "no reaction."

Can someone please help me with these? I don't even know where to begin.

  • chemistry -

    1. I'm not sure

    2. "no reaction"

    3. 2HBr(aq)+Sn(s) --> SnBr2(aq)+H2(g)

    4. "no reaction"

    5. "no reaction"

  • chemistry -

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