How many moles of allicin are present in 6.50 mg of this substance?

4.01 * 10⁻⁵ Moles

Explanation:

Allicin (C₆H₁₀S₂O) is a sulfur containing organic compound which is responsible for the aroma of Garlic.

Molecular Mass of Allicin = 162.26 g. mol⁻¹

Mass given = 6.50 mg = 0.0065 g

Formula Used:

Moles = Mass : Molar Mass

Putting values,

Moles = 0.0065 g : 162.26 g. mol⁻¹

Moles = 0.0000401 mol

Or,

Moles = 4.01 * 10⁻⁵ mol