Question

Вычислите молярную массу бензола и толуола. какого вещества больше

Answer 1

M(C6H6)=78                                 M(C6H5CH3)=92                                                           следовательно у толуола больше

Answer 2

Molar Mass of Benzene and Toluene

The molar mass of a substance is the mass of one mole of that substance. To calculate the molar mass of benzene and toluene, we can use the chemical formulas for these compounds.

Benzene (C6H6): The molar mass of benzene can be calculated by adding up the atomic masses of its constituent atoms. The atomic mass of carbon (C) is approximately 12.01 g/mol, and the atomic mass of hydrogen (H) is approximately 1.008 g/mol.

The molar mass of benzene (C6H6) can be calculated as: 6(C) + 6(H) = 6(12.01 g/mol) + 6(1.008 g/mol) = 78.114 g/mol

Toluene (C7H8): Similarly, the molar mass of toluene can be calculated using the atomic masses of carbon and hydrogen.

The molar mass of toluene (C7H8) can be calculated as: 7(C) + 8(H) = 7(12.01 g/mol) + 8(1.008 g/mol) = 92.138 g/mol

Comparison

Comparing the molar masses of benzene and toluene: - The molar mass of benzene is approximately 78.114 g/mol. - The molar mass of toluene is approximately 92.138 g/mol.

Therefore, the molar mass of toluene is greater than the molar mass of benzene.