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44.8L of oxygen is kept into a container at STP. a)What is the number of oxygen moles in it? b)What will be the number of molecules in it?
           
Avagadro's number is the number of molecules in a mole of any molecular substance .
                    One mole = 6.022 x 1023 atoms
Number of oxygen moles in the container =  6.022 x1023 x 2 =12.044 (One mole of an ideal gas  at STP occupies 22.4 litres )
                                                              
Number of  molecules in the container       = 6.022 x10 23 x1=6.022 x 1023
(Avagadro's number is the number of molecules in a mole of any molecular substance)
                                                                 



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