The answer will be A since chemical where discovered
Answer:
J
Explanation:
Chlorine Gas is Cl2 so if it isnt on the left as that its wrong.
Then on the products see that Fe III means Fe is +3 charge so we have to have 3 Cl to balance it to 0 since each cl as -1 charge.
FInally check if the equation is balanced J is maybe H but its to blurry to tell
Okay thanks for reminding me
MgO+2HBr->MgBr2+H2O
2N2+5O2->2N2O5
C2H4+3O2->2CO2+2H2O
Fe+2HCl->FeCl2+H2
thermal, mechanical, and chemical.