Final answer:
To calculate the mass percent of hydrogen in diethyl ether, the atomic masses of its elements are summed to get the molar mass. Then, the mass of hydrogen present is divided by the molar mass, and multiplied by 100% to find the mass percent, which is approximately 13.62%.
Step-by-step explanation:
To calculate the mass percent of hydrogen in diethyl ether (C4H10O), we first need to determine the molar mass of diethyl ether by adding the atomic masses of its constituent atoms. The molecule contains 4 carbon atoms, 10 hydrogen atoms, and 1 oxygen atom.
The atomic masses are approximately 12.01 g/mol for carbon, 1.01 g/mol for hydrogen, and 16.00 g/mol for oxygen. The molar mass is calculated as (4 × 12.01) + (10 × 1.01) + (1 × 16.00), which equals 74.12 g/mol for C4H10O.
The total mass of hydrogen in one mole of diethyl ether is 10 × 1.01 g/mol, which is 10.10 g/mol. To find the mass percent of hydrogen, we divide the mass of hydrogen by the molar mass of diethyl ether and multiply by 100 percent:
Mass percent of hydrogen = (10.10 g / 74.12 g/mol) × 100% ≈ 13.62%
Therefore, the mass percent of hydrogen in diethyl ether is approximately 13.62%.