Question

Рассчитать массовую долю углерода в молекуле гептина-1

Answer 1

Молекула = малекула я еще 3 класс

Answer 2

Calculation of the Mass Fraction of Carbon in Heptane-1

To calculate the mass fraction of carbon in a molecule of heptane-1 (C7H16), we need to determine the molar mass of carbon and the molar mass of the entire molecule.

The molar mass of carbon (C) is approximately 12 g/mol.

The molar mass of heptane-1 (C7H16) can be calculated by summing the molar masses of each element in the molecule. The molar mass of hydrogen (H) is approximately 1 g/mol.

Using the molar masses, we can calculate the mass fraction of carbon in heptane-1 as follows:

1. Calculate the molar mass of heptane-1 (C7H16): - Molar mass of carbon (C): 12 g/mol - Molar mass of hydrogen (H): 1 g/mol - Molar mass of heptane-1 (C7H16) = (7 * 12 g/mol) + (16 * 1 g/mol) = 84 g/mol.

2. Calculate the mass fraction of carbon (C) in heptane-1 (C7H16): - Mass fraction of carbon (C) = (Number of carbon atoms * Molar mass of carbon) / Molar mass of heptane-1 - Number of carbon atoms in heptane-1 (C7H16) = 7 - Mass fraction of carbon (C) = (7 * 12 g/mol) / 84 g/mol = 1/6 ≈ 0.1667 or 16.67%.

Therefore, the mass fraction of carbon in a molecule of heptane-1 is approximately 16.67%.