Aglass of water undergoes four changes: first it is frozen solid. next, the ice is crushed into small pieces of ice. third, the ice melts, and fourth, an electrical current is passed through the water to separate out hydrogen and oxygen. which of the following represents the correct sequence of changes to the water? a.physical, physical, chemical, chemical b.physical, chemical, physical, chemical c.physical, physical, physical, chemical
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Ответ:
Option C. physical, physical, physical, chemical
Explanation:
Ответ:
4 FeCl3 + 3 O2 = 2 Fe2O3 + 6 Cl2
Divide the moles to their coefficient
FeCl3: 4moles/4 = 1
O2: 4moles/3 = 1.33333333...
Smallest one is the limiting reagent = FeCl3