Answer:
8
Explanation:
there are two ammonium ions with four hydrogen atoms each.
4*2=8
Energy may only be transformed from one sort to another. hope this helps :)
Answer : The number of moles of HCl neutralize is, 0.00824 moles.
Explanation :
The given balanced chemical reaction is:

First we have to calculate the moles of 

Molar mass of
= 144 g/mol

Now we have to calculate the moles of HCl.
From the balanced chemical reaction we conclude that,
As, 1 mole of
react with 4 moles of HCl
So, 0.00206 mole of
react with
moles of HCl
Thus, the number of moles of HCl neutralize is, 0.00824 moles.
Answer:
metals and nonmetal ions
Explanation:
Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.