He did not apply the fifty newtons of greater force! Ok it says when it needed to have the greater force of fifty the person only put 10N out of the fifty, and left out 40N, that is why it did not work properly.
its the oceam which is blue in color so
Calcium Carbonate is CaCO3
Hydrochloric Acid is HCl
CaCO3 + 2HCl ----> CaCl2 + H2O + CO2
If this is balancing them its 4H+1NH —> 1H+NH4
