Final answer:
The molar mass of butane, which is the sum of the atomic masses of its atoms, is 58.12 g/mol. This calculation is based on 4 carbon atoms and 10 hydrogen atoms.
Step-by-step explanation:
The molar mass of butane (C4H10) is calculated by adding up the atomic masses of all the atoms in a molecule of butane. Butane consists of 4 carbon (C) atoms and 10 hydrogen (H) atoms. The atomic mass of carbon is approximately 12.01 u (unified atomic mass units) and that of hydrogen is approximately 1.008 u.
To calculate the molar mass of butane, we use the formula:
Molar mass of butane = (Number of C atoms × Atomic mass of C) + (Number of H atoms × Atomic mass of H)
So that would be:
Molar mass of butane = (4 × 12.01 u) + (10 × 1.008 u) = 48.04 u + 10.08 u = 58.12 u
Therefore, the molar mass of butane is 58.12 g/mol.