how many atoms in total are present in 1kg of sugar
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Molar mass of the Sugar = 342 g/mole.
Mass = 1 kg. = 1000 g.
∴ No. of moles = 1000/342
= 2.92 moles.
∵ No. of molecules = No. of moles × Avogadro's number.
∴ No. of molecules = 2.92 × 6.022 × 10²³
= 17.58 × 10²³ molecules.
No. of atoms in 1 molecules of Sugar(C₁₂H₂₂O₁₁) = 12 + 22 + 11
= 45
∴ Total number of atoms in 1 kg of sugar = 45 × 17.58 × 10²³
= 791.29 × 10²³
= 7.913 × 10²⁵ atoms.
Hope it helps.
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