Final answer:
The molar mass of C4H10 is 58.14 g/mol. There are approximately 9.54 × 10^22 molecules of C4H10 in 9.213 g of the compound, amounting to roughly 9.54 × 10^23 hydrogen atoms.
Step-by-step explanation:
Calculating Molar Mass and Number of Atoms
To find the molar mass of C4H10, we add the atomic masses of carbon (C) and hydrogen (H). Carbon has an atomic mass of approximately 12.01 g/mol, and hydrogen has an atomic mass of about 1.008 g/mol. Since the compound has four carbon atoms and ten hydrogen atoms, the calculation would be: (4 × 12.01) + (10 × 1.008) = 58.14 g/mol. Therefore, the molar mass of C4H10 is 58.14 g/mol.
To determine how many C4H10 molecules are contained in 9.213 g of this compound, we use the formula:
For C4H10 this gives us: Number of moles = 9.213 g ÷ 58.14 g/mol which equals approximately 0.1584 moles.
To convert moles to molecules, we use Avogadro's number (6.022 × 1023 molecules/mol):
So in this case: Molecules = 0.1584 mol × 6.022 × 1023 ≈ 9.54 × 1022 molecules of C4H10.
To find the number of hydrogen atoms, we multiply the number of C4H10 molecules by the number of hydrogen atoms per molecule:
This results in: Hydrogen atoms = 9.54 × 1022 × 10 ≈ 9.54 × 1023 hydrogen atoms.