Oxygen can be obtained from water using electrolysis process as follows: 2 H2O .............> 2H2 + O2
It is given that: molar mass of water = 10.01 grams and molar mass of O2 = 32 grams
From the balanced chemical equation, we can conclude that: 2 moles of water produce 1 mole of oxygen 2 x 18.01 = 36.02 grams of water produce 32 grams of oxygen.
To calculate how many grams of water must react to produce 50 grams of oxygen, we can use cross multiplication as follows: mass of required water = 56.28125 grams
The noble gases have 8 valence electrons in their outermost electron shell. In other words, they have full out shells. These elements are highly stable.
