Is this an element? Cu20
O Yes, it's made of 1 type of atoms
O No it's made of more than 1 type of atoms

Yes, its made of 1 types of atoms

Explanation:

Cu20 is Copper(I) oxide or cuprous oxide

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  

i think its 100.

hope this !