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At least 27 ug of tetrahydrocannabinol (THC), the
active ingredient in marijuana, is required to
produce intoxication. The molecular formula of THC
is C21H30 O2.
How many moles of THC does this 27 ug represent?

Respuesta :

The number of mole in 27 μg of tetrahydrocannabinol (THC),  C₂₁H₃₀O₂ is 8.6×10¯⁸ mole

We'll begin by converting 27 μg to grams (g). This can be obtained as follow:

1 μg = 1×10¯⁶ g

Therefore,

27 μg = 27 × 1×10¯⁶

27 μg = 27×10¯⁶ g

Thus, 27 μg is equivalent to 27×10¯⁶ g.

Next, we shall determine the molar mass of C₂₁H₃₀O₂. This is illustrated below:

Molar mass of C₂₁H₃₀O₂ = (12×21) + (1×30) + (16×2)

= 252 + 30 + 32

= 314 g/mol

Finally, we shall determine the number of mole in the 27 μg (i.e 27×10¯⁶ g) of C₂₁H₃₀O₂.

Molar mass of C₂₁H₃₀O₂ = 314 g/mol

Mass of C₂₁H₃₀O₂ = 27×10¯⁶ g.

Mole of C₂₁H₃₀O₂ =?

[tex]Mole = \frac{mole}{molar mass}\\\\[/tex]

Mole of C₂₁H₃₀O₂ = [tex]\frac{27*10^{-6} }{314}\\\\[/tex]

Mole of C₂₁H₃₀O₂ = 8.6×10¯⁸ mole

Therefore, the number of mole in 27 μg (i.e 27×10¯⁶ g) of C₂₁H₃₀O₂ is  8.6×10¯⁸ mole

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