Question

Какое количество вещества атомной серы содержится в сульфиде железа 2 массой 11г?

Answer 1

N(FeS)=m\M=11\88=0,125 моль

Answer 2

Calculating the Amount of Substance of Atomic Sulfur in Iron(II) Sulfide

To calculate the amount of substance of atomic sulfur in iron(II) sulfide, we can use the given mass of iron(II) sulfide and the molar mass of iron(II) sulfide to find the amount of substance of sulfur.

The molar mass of iron(II) sulfide (FeS) can be calculated by adding the atomic masses of iron (Fe) and sulfur (S) together. The atomic mass of iron is approximately 55.845 g/mol, and the atomic mass of sulfur is approximately 32.06 g/mol.

Calculation

Given: - Mass of iron(II) sulfide (FeS): 11 g - Atomic mass of sulfur (S): 32.06 g/mol

We can use the formula: Amount of substance (in moles) = Mass / Molar mass

The molar mass of iron(II) sulfide (FeS) is the sum of the atomic masses of iron and sulfur.

Solution

Using the given mass of iron(II) sulfide and the molar mass of iron(II) sulfide, we can calculate the amount of substance of sulfur in iron(II) sulfide.

Molar mass of FeS = Atomic mass of Fe + Atomic mass of S Molar mass of FeS = 55.845 g/mol + 32.06 g/mol Molar mass of FeS ≈ 87.905 g/mol

Now, we can calculate the amount of substance of sulfur: Amount of substance of S = Mass of FeS / Molar mass of FeS Amount of substance of S = 11 g / 87.905 g/mol Amount of substance of S ≈ 0.125 moles

Therefore, the amount of substance of atomic sulfur in iron(II) sulfide with a mass of 11 g is approximately 0.125 moles.