Question

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

Explanation:

Step1: Identify atom - types and quantities

Propane ($CH_3CH_2CH_3$) has 3 carbon (C) atoms and 8 hydrogen (H) atoms.

Step2: Recall molar - masses of atoms

The molar mass of carbon ($M_{C}$) is approximately 12.01 g/mol and the molar mass of hydrogen ($M_{H}$) is approximately 1.01 g/mol.

Step3: Calculate molar mass of propane

$M = 3\times M_{C}+8\times M_{H}=3\times12.01 + 8\times1.01$.
$M = 36.03+8.08$.
$M = 44.11$ g/mol.

Answer:

44.11 g/mol