Having trouble my 8th grader on types of chemical reactions.
question:
in a blank rea tion, the negative ions in two compounds switch places, forming two new compounds

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

How many atoms are there in 5.70 mol of mg