Final answer:
The mass of 0.55 mole of C6H6 is 42.9594 g, calculated by multiplying the number of moles (0.55) by the molar mass of benzene (78.108 g/mol).
Step-by-step explanation:
To determine the mass of 0.55 mole of C6H6, we need to calculate the molar mass of C6H6. We know that carbon (C) has a molar mass of 12.01 g/mol and hydrogen (H) has a molar mass of 1.008 g/mol. Thus:
- For C: 12.01 g/mol × 6 = 72.06 g/mol
- For H: 1.008 g/mol × 6 = 6.048 g/mol
Adding these together, the molar mass of C6H6 is 72.06 g/mol + 6.048 g/mol = 78.108 g/mol.
To find the mass of 0.55 mole of C6H6, we multiply the number of moles by the molar mass:
Mass = number of moles × molar mass = 0.55 mol × 78.108 g/mol = 42.9594 g.
Therefore, the mass of 0.55 mole of C6H6 is 42.9594 g.