Respuesta :
Answer:
3 refers to the fact that three whole NH4 molecules are present. 4 refers to the fact that there are 4 hydrogen atoms in one NH4 molecule.
Explanation:
A number that comes before a molecule such as 5H2O or 6NaCl refers to how many of that molecule there are. A subscript added to an element in a molecule refers to how many atoms of that element are in the molecule.
Answer:
It means that there are 3 NH4 molecules, and each molecule has 4 hydrogen atoms.
Explanation:
