1.

A flask contain 4.4 g of CO2  how many atoms of O2 are present in the atom?

Answer»

Please note that O2 denotes one molecule of oxygen. Hence this notation cannot be used for denoting the atoms of oxygen. 

Now 1 molecule of CO2 contains 2 atoms of oxygen. 

Therefore 6.023 X 1022 molecules of CO2 will contain 2 X 6.023 X 1022 atoms of oxygen = 12.046 X 1022 atoms of oxygen.



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