Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs, write NOREACTION.
1) potassium carbonate and lead(II) nitrate
2) lithium sulfate and lead(II) acetate
3) copper(II) nitrate and magnesium sulfide
4) strontium nitrate and potassium iodide
5) sodium chloride and lead (II) acetate
6) potassium sulfate and strontium iodide
7) chromium (III) nitrate and sodium phosphate