Question

please help me to complete

Answer 1

a. N₂ + 3H₂ = 2NH₃

b. it is already balanced

c. 2Mg + O₂ = 2MgO

d. 4Al + 3O₂ = 2Al₂O₃

e. 4Fe + 3O₂ = 2Fe₂O₃

f. Zn + 2HCl = ZnCl₂ + H₂

g. 2H₂ + O₂ = 2H₂O

h. it is already balanced

i. 2Na + 2H₂O = 2NaOH + H₂

j. 2Na + 2HCl = 2NaCl + H₂

valency of oxygen is 2

valency of aluminium is 3

valency of magnesium is 2

valency of carbon is 4