What does The letters in a chemical formula represent

the letters represent the atomic symbol of each atom. The subscript (lower) represents the number of each atom, while the superscript (higher) represents the charge on a given atom. A coefficient before a chemical formula represents that many units of the molecule.

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them