Calculate their mass of 12.044x 10^23 oxygen atoms.
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No.of moles in oxygen atom
= given no. of particles/avagadro's no.
=12.044×10²³/6.022×10²³
=2moles
Mass of oxygen atom
=Molar mass×no.of moles
=16×2
32g
So,the mass of 12.044×10²³ oxygen atom is 32g
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