Question

The monomer of poly(vinyl chloride) has the formula C2H3Cl. If there are 1,565 repeat units in a single chain of the polymer, what is the molecular mass (in amu) of that chain? Enter your answer in scientific notation.

Answer 1

`\large \boxed{9.780 * 10^(4)\text{ u}}`

Step-by-step explanation:

The molecular mass of a monomer unit is:

C₂H₃Cl = 2×12.01 + 3×1.008 + 35.45 = 24.02 + 3.024 + 35.45 = 62.494 u

For 1565 units,

`\text{Molecular mass} = \text{1565 units} * \frac{\text{62.494 u}}{\text{1 unit }} = \mathbf{9.780 * 10^(4)}\textbf{ u}\\\\\text{The molecular mass of the chain is $\large \boxed{\mathbf{9.780 * 10^(4)}\textbf{ u}}$}`