write a balanced equation - we have to do about 20 would be grateful if someone could show me first 2

Question

1. silver + chlorine (arrow towards sc) silver chloride

2. hydrogen + chlorine (arrow towards) hydrogen chloride

Answer 1

Ag + Cl2 ==> AgCl
balanced is
2Ag + Cl2 ==> 2AgCl.

H2 + Cl2 ==> HCl
balanced is
H2 + Cl2 ==> 2HCl.

You will always know if the equation is balanced or not by checking it. Make sure the number of atoms of an element on the left has the same number of atoms of that element on the right (of the arrow). Also, rule #1 in balancing equations is: You may not change the subscripts to balance an equation. ONLY coefficients may be changed.