Seleccione un producto o sustancia de la vida cotidiana. el cual pueda usarse cono ejemplo de una representación de átomos iguales se los agradecería mucho​

You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom. 

Here is the link to the all information u need i mean answer key

Answers are 1,2,4 its correct on edgenuity.

The mole ratio of hydrogen to ammonia is 3: 2.