Question

Melatonin has the chemical formula C13H16N2O2. Less than 10 milligrams(0.01g) Convert the melatonin to moles

Answer 1

Answer: There are 0.000043 moles of melatonin.

Step-by-step explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number
`6.023* 10^(23)` of particles.

To calculate the moles, we use the equation:

`\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}`

given mass = 10 mg = 0.01 g

molar mass of
`C_(13)H_(16)N_2O_2` = 232.28 g

`{\text {moles of melatonin}}=(0.01g)/(232.28g/mol)=0.000043moles`

Thus there are 0.000043 moles of melatonin