How does hydrogen ion change into hydrogen atom
plz answer as fast as you can

If you reacted HCl with a metal E.G. Mg, the electrons lost from the Mg atoms would bond to the hydrogen atoms during the reaction. This is known as a redox reaction.

2HCl + Mg -> MgCl2+H2

an honest friend. a friend who cares about me, and wont use me. a friend that i can trust. not someone who is fake

mark this brainliest lol i need one more.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.