When a sample of ca(s) loses 1 mole of electrons in a reaction with a sample of o2(g) the oxygen?
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Ответ:
Gains 1 mole of electrons
Ответ:
Net Reaction: Ca + 1/2 O2 → CaO. (1)
In terms of oxidation and reduction, the reaction can be shown at
Oxidation: Ca → Ca2+ + 2e- (2)
Reduction: 1/2O2 + 2e- → O2-(3)
From, reaction 1 it can be seen that 1 mol of Ca reacts with 1/2 mol of O2 to form 1 mol of CaO.
From, reaction 2 it can be seen that 1 mol of Ca, generates 2 mol of e-.
Thus, when 1/2 mol of Ca is used in reaction, it will lose 1 mol of electrons.
Ответ:
Point: Global warming is a result of excess destruction of OZONE LAYER.
Reason: Carbon monoxide has been excessively released which rises up and destroys the Ozone layer which is made up of O₃.
Point: Global warming also is the result of excess pollution
Reason: Some of the pollutants just like carbon monoxide destroys the Ozone layer.