¿Qué tipo de enlace químico probablemente mantiene unido a los átomos de cada una de estas sustancias? Cobre (Cu) …………………………………………..
Oxido de plata (Ag2O) …………………………………………..
Nitrógeno (N2) …………………………………………..
Ácido clorhídrico (HCl) …………………………………………..

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

the answer is d. 74.02

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