Answer: Option (b) is the correct answer.
Explanation:
Number of moles given are 0.5 mol and molar mass of tyrosine ([tex]C_{9}H_{11}NO_{3}[/tex]) is 181.19 g/mol.
Therefore, calculate the mass of given molecules follows.
No. of moles of tyrosine = [tex]\frac{mass}{\text{molar mass}}[/tex]
0.5 mol = [tex]\frac{mass}{181.19 g/mol}[/tex]
mass = 90.595 g
Therefore, we can conclude that mass of 0.5 mole of tyrosine ([tex]C_{9}H_{11}NO_{3}[/tex]) is 90.5 g.
