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In 10 g of hydrogen it may be 6.022*10rase to th power23 *10/3 it may be i am not confirm
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Hydrogen is a monoatomic element.
So, Hydrogen gas- H(1)
Given Mass= 10g
Molar Mass=1×1g= 1g
No. of moles= Given mass/ Molar mass
                    = 10g/1g
                    = 10 moles
no. of particles= 10×6.022×10^23
                        = 6.022×10^24

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