A is the answer and since I’m here you may as well give brainliest bc it gives you points
Answer:
A cation.
Explanation:
When an electron is liberated, that means it is removed from the atom.
When an electron is lost, the atom is ionized, and becomes a cation.
It becomes a cation because it loses one negative charge, and therefore become positively charged.
Moles = 4.03 x 10^21
------------------------
6.02 x 10^23
= 6.69 x 10^-3 moles.
Hope this helps!
To find out the number of water molecules produced simply use Avogadro’s constant, where 1 mol of any compound is equal to 6.02 x 10^23 molecules of the substance.
Multiply 0.815 to this value.
The moles of magnesium in 1.25 x 1023 are 20.8 mol.
