Chapter SH, Problem 24.4APP

To determine

To express: The mass (in amu) of a polypropylene molecule in scientific notation.

Answer to Problem 24.4APP

Mass of the polypropylene molecule is $\underset{\_}{252\times {10}^4\text{ amu}}$ .

Explanation of Solution

Given:

Number of monomers in the sample = $60,000$

Formula of the monomer = ${\text{C}}_3{\text{H}}_6$

Calculation:

Mass of hydrogen atom = $1.00\text{ amu}$

Mass of carbon atom = $12.01\text{ amu}$

Mass of ${\text{C}}_3{\text{H}}_6$ is calculated as:

  $12.01\times 3+1\times 6=42\text{ amu}$

Mass of $60,000$ monomers is calculated as:

  $42\times 60000=2520000=252\times {10}^4\text{ amu}$

Conclusion:

Mass of the polypropylene molecule is $\underset{\_}{252\times {10}^4\text{ amu}}$ .