What type of reaction occurs when potassium iodide is combined with lead (II) nitrate? A. single replacement
b. double replacement
c. synthesis
d. combustion

What is the chemical formula of the following compound

Iwill give extra points to who gets this right

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage