Question

До складу сполуки заліза з оксигеном входить 4 атоми оксигену. Відносна молекулярна маса цієї сполуки дорівнює 232. Встановіть число атомів заліза у сполуці, якщо відомо, що масова частка заліза становить 72,5%

Answer 1

Ответ:

3

Объяснение:

В нас маса усьої речовини 232, ми можемо відразу знайти массу заліза в цій формулі віднявши масу Оксигену(16*4=64) (232-64=168), в нас вийде 168 і тепер знаючи що маса одного атома феруму = 56, ми просто ділимо 168/56=3 (можна вирішити й набагато легше через формулу відсотків)

Answer 2

Calculation of the Number of Iron Atoms in the Compound

To determine the number of iron atoms in the compound, we can use the given information about the relative molecular mass and the mass fraction of iron.

1. Calculate the molar mass of the compound: The relative molecular mass of the compound is given as 232. This value represents the mass of one mole of the compound in grams. Therefore, the molar mass of the compound is 232 g/mol.

2. Determine the mass of iron in the compound: The mass fraction of iron is given as 72.5%. This means that 72.5% of the compound's mass is due to iron. To calculate the mass of iron, we multiply the molar mass of the compound by the mass fraction of iron: Mass of iron = (72.5/100) * 232 g

3. Calculate the number of moles of iron: To find the number of moles of iron, we divide the mass of iron by the molar mass of iron: Number of moles of iron = (Mass of iron) / (Molar mass of iron)

4. Convert moles to atoms: Since one mole contains Avogadro's number (6.022 x 10^23) of particles, we can multiply the number of moles of iron by Avogadro's number to find the number of iron atoms: Number of iron atoms = (Number of moles of iron) * (Avogadro's number)

Now, let's perform the calculations:

1. Calculate the molar mass of the compound: Molar mass of the compound = 232 g/mol

2. Determine the mass of iron in the compound: Mass of iron = (72.5/100) * 232 g

3. Calculate the number of moles of iron: Number of moles of iron = (Mass of iron) / (Molar mass of iron)

4. Convert moles to atoms: Number of iron atoms = (Number of moles of iron) * (Avogadro's number)

Please note that the value of Avogadro's number is approximately 6.022 x 10^23.

Let's perform the calculations to find the number of iron atoms in the compound.