how many hcl molecules do you need to balance this equation? mg + ___hcl ---> mgcl₂ + h₂
how many hcl molecules do you need to balance this equation? mg + ___hcl ---> mgcl₂ + h₂
Answer
Explanation:
Step1: Count atoms on right - hand side
On the right - hand side of the equation $MgCl_2 + H_2$, there are 1 Mg atom, 2 Cl atoms, and 2 H atoms.
Step2: Balance Cl and H atoms with HCl
To balance the Cl and H atoms, we need 2 HCl molecules on the left - hand side since each HCl molecule has 1 H and 1 Cl atom. The balanced equation is $Mg + 2HCl\rightarrow MgCl_2 + H_2$.
Answer:
2