from 200 mg of co21021 molecules are removed how many

Number of molecules = number of moles × 6.023 × 10²³
= 0.2/44 × 6.023 × 10²³
= 0.027 × 10²³
= 2.7 × 10²¹
10²¹ molecule are removed from 2.7 × 10²¹ molecules of CO₂.
so, number of molecules are left = (2.7 -1) × 10²¹ = 1.7 × 10²¹
∵ mole = number of molecules/6.023 × 10²³
= 1.7/6.023 × 10²¹⁻²³
= 0.28 × 10⁻² = 0.0028

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