A 0.50 g sample of Mg(s) was placed in a solution of HCl(aq), where it reacted completely. Which of the
following equations best represents their reaction?
a.) Mg(s)+2HCl--->MgCl2+2H^1+
b.) Mg(s)+2H^1+--->Mg^2+ + H2(g)
c.) Mg(s)+HCl--->MgCl2+H2(g)
d.) Mg(s)+2HCl--->Mg^2+ +Cl2(g)+H2(g)