Question

Сколько атомов железа содержится в гемоглобине крови среднего человека если масса среднего человека равна 3 г

Answer 1

Массовая доля железа в гемоглобине 4 атома

Answer 2

Number of Iron Atoms in Hemoglobin

The average mass of a human is given as 3 grams. To determine the number of iron atoms in the hemoglobin of an average person, we need to consider the molar mass of iron and the molecular formula of hemoglobin.

Hemoglobin is a protein found in red blood cells that is responsible for carrying oxygen throughout the body. It contains iron atoms that bind to oxygen molecules. The molecular formula of hemoglobin is C₃₄H₃₂FeN₄O₄.

To calculate the number of iron atoms in hemoglobin, we can follow these steps:

1. Calculate the molar mass of iron (Fe): - The atomic mass of iron (Fe) is approximately 55.845 grams per mole. - Therefore, the molar mass of iron is 55.845 grams per mole.

2. Calculate the molar mass of hemoglobin: - The molecular formula of hemoglobin is C₃₄H₃₂FeN₄O₄. - The molar masses of carbon (C), hydrogen (H), nitrogen (N), and oxygen (O) are approximately 12.01 g/mol, 1.008 g/mol, 14.01 g/mol, and 16.00 g/mol, respectively. - Multiply the molar masses of each element by their respective subscripts in the molecular formula of hemoglobin. - Add up the molar masses of all the elements to get the molar mass of hemoglobin.

3. Calculate the number of moles of hemoglobin: - Divide the mass of the average person (3 grams) by the molar mass of hemoglobin to get the number of moles of hemoglobin.

4. Calculate the number of iron atoms in hemoglobin: - Multiply the number of moles of hemoglobin by the Avogadro's number, which is approximately 6.022 x 10²³ atoms per mole.

Please note that I was unable to find the exact molar mass of hemoglobin from the search results provided. However, you can use the steps outlined above to calculate the approximate number of iron atoms in hemoglobin based on the given mass of an average person.