$1.$ Write out the balanced chemical equation for the double replacement reaction of lead nitrate and potassium iodide: $2.$ Describe the color of each aqueous solution of reactants lead nitrate and potassium iodide: $3.$ Describe the color and state of each product $($note$,$ there are two products you will need to describe the color and state of$).$ Recall, by $$state$$ we mean aqueous $($aq$),$ gas $($g$),$ liquid $($l$),$ and solid $($s$).$