Please Help me with my Chemistry Homework, equations and (aq) CONFUSING!

So I missed a lessons and I'm catching up with h/w, it has to be in tomorrow and I've been off all week so I couldn't ask about it.
Can someone please help me with these 5 equations?
Please help me with the answers and how to work them out (:
1. Lead (II) Nitrate (aq) + Potassium Bromide (aq) = _________ + __________
2.Potassium Carbonate (aq) + Nickel (II) Sulphate (aq) = _________ + __________
3. Copper (II) Sulphate (aq) + Sodium Hydroxide (aq) = _________ + __________
4. Magnesium Chloride (aq) + Silver Nitrate (aq) = _________ + __________
5. Iron (II) Nitrate (aq) + Calcium Hydroxide (aq) = _________ + __________
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I have no idea how to go about doing them and couldn't find any simple or relevant explanations on the internet, thanks so much to anyone that can give me a hand here! ^^"
xxxx

This kind of chemical reaction is called Double replacement, so parts of two compounds switch places to form two new compounds. You can identify it by just looking for two compounds on the left side (reactant) which both are (aq = Aqueous). So your answers will be like:

1. Lead (II) Nitrate (aq) + Potassium Bromide (aq) = Lead (II) Bromide + Potassium Nitrate
2.Potassium Carbonate (aq) + Nickel (II) Sulphate (aq) = Potassium Sulphate + Nickel (II) Carbonate
3. Copper (II) Sulphate (aq) + Sodium Hydroxide (aq) = Copper (II) Hydroxide + Sodium Hydroxide
4. Magnesium Chloride (aq) + Silver Nitrate (aq) = Magnesium Nitrate + Silver Chloride
5. Iron (II) Nitrate (aq) + Calcium Hydroxide (aq) = Iron (II) Hydroxide + Calcium Nitrate

The big problem is to understand which is (aq) and which is not in the products. When something is Aqueous it means that all the ion are just separated in the water. for example Sodium Hydroxide (aq) is no longer a chemical compound, it's just ions in water. So if you have Copper (II) Sulphate (aq) + Sodium Hydroxide (aq) = Copper (II) Hydroxide(aq) + Sodium Hydroxide(aq) it means that no reaction has took place. Unless one of the products is either (s), (l), or (g) in a double replacement. Based on what my high school teacher has taught me, all the products that contain Li, Na, K, Rb, Cs, NH4-, NO3, ClO3 are (aq). ionic salts are either (aq) or (s) in a Double replacement. We learnt it this way and it always worked for me.

So,
1. Lead (II) Nitrate (aq) + Potassium Bromide (aq) = Lead (II) Bromide(s) + Potassium Nitrate(aq)
2.Potassium Carbonate (aq) + Nickel (II) Sulphate (aq) = Potassium Sulphate(aq) + Nickel (II) Carbonate (s)
3. Copper (II) Sulphate (aq) + Sodium Hydroxide (aq) = Copper (II) Hydroxide (s) + Sodium Hydroxide (aq)
4. Magnesium Chloride (aq) + Silver Nitrate (aq) = Magnesium Nitrate (aq) + Silver Chloride (s)
5. Iron (II) Nitrate (aq) + Calcium Hydroxide (aq) = Iron (II) Hydroxide (s) + Calcium Nitrate (aq)

Hope you find my explanations usefull:)

These are all precipitation reactions.
1. Swap over each half of each compound onto the right hand side (making sure that the metal is written first each time).
2. Look at your solubility table to work out which product is soluble (aq) and which is insoluble (s).