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Question
Calculate the mass of 1022 atoms of sulphur.
[Atomic mass: S = 32, C = 12 and O = 16 and Avogadro's number = 6 × 1023]
Solution
6.022 × 1023 atoms of sulphur weight = 32 g
1 atom of sulphur weigh = `32/(6.022 xx 10^23)`
1022 atoms of sulphur weigh = `32/(6.022 xx 10^23) xx 10^22`
= 0.531 g
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