Mg(OH)2
Mg: 1
O: 2
H: 2
Mg. O H
24.3g 32g. 2
58.3g in 1 mol of Mg(OH)2
3.2mol of Mg(OH)2 x 58.3g of Mg(OH)2
-------------------------
1 mol of Mg(OH)2
= 186.56 g of Mg(OH)2 in 3.2 mols of Mg(OH)2
If I'm not mistaken, it's 1:2. 1 mole of H2 = 2 moles of H. 1 mole of Cl2 = 2 moles of Cl.
The answer is B: Kinetic energy within molecules
A. The electron moves from a lower to a higher energy orbital
Answer : To balance a chemical equation you need to find the same number of molecules on both the sides of the reaction.
Here in the reaction ;

here we can see that I is not balanced so we need to balance that,
also nitrate is unbalanced we need to work on that as well.
so on solving we get,