Question

the chemical formula for propane is: ch₃ch₂ch₃ calculate the molar mass of propane. round your answer to 2 decimal places. g·mol⁻¹

Explanation:

Step1: Determine the number of each atom

Propane ($\ce{CH3CH2CH3}$) has 3 carbon ($C$) atoms and 8 hydrogen ($H$) atoms.

Step2: Find the molar mass of each atom

The molar mass of $C$ is $12.01\ \text{g/mol}$, and the molar mass of $H$ is $1.008\ \text{g/mol}$.

Step3: Calculate the molar mass of propane

The molar mass of propane $M = 3\times12.01+8\times1.008$.
First, calculate $3\times12.01 = 36.03$.
Then, calculate $8\times1.008=8.064$.
Finally, $M=36.03 + 8.064=44.094\approx44.09\ \text{g/mol}$.

Answer:

$44.09$