Based on the balanced equation: 2 K + Cl2 --> 2KCl what is the mole ratio of K to KCl

2 : 2

Explanation:

The balanced chemical equation is given as:

            2K   +     Cl₂   →    2KCl

From the balanced reaction equation, we can conclude that;

2 moles of K will react with 1 mole of Cl₂ 2 moles of K will produce 2 moles of KCl 1 mole of Cl₂ will produce 2 moles of KCl

Therefore, the mole ratio is 2:2 or 1:1 in the simplest form.

And a) oxygen i believe

Ithink about 50 % of an original isotope's number of atoms remain