Answer: The moles of melatonin are 0.000043
Step-by-step explanation:
According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number
of particles.
To calculate the moles, we use the equation:
Given mass of melatonin = 0.01 g
Molar mass of melatonin
= 232.28 g/mol
Thus the moles of melatonin in 0.01 g are 0.000043