# FeS (Ferrous sulfide) Molar Mass (With Calculations)

Molar mass of FeS (Ferrous sulfide) is 87.905 g/mol.

Well, now you have come to know the molar mass of FeS.

But how can you get this value?

Let me show you the calculation to get the molar mass of FeS (Ferrous sulfide).

You can also refer to this one minute video which will show you the simple steps to calculate the molar mass of any compounds.

## FeS (Ferrous sulfide) Molar Mass Calculation

If you have a periodic table with you, then you can easily calculate the molar mass of FeS (Ferrous sulfide).

Because the molar mass of any molecule (or compound) can be calculated by simply adding the molar masses of individual atoms.

Now here we have to find the molar mass of FeS (Ferrous sulfide).

So for that, have a look at the periodic table given below.

You can see the molar mass value of all the atoms from this periodic table.

Now in FeS, there is 1 Iron atom and 1 Sulfur atom.

So let’s look at the molar mass of Iron and Sulfur from the above periodic table.

You can see that;

The molar mass of Iron is 55.845 g/mol. [1]

The molar mass of Sulfur is 32.06 g/mol. [2]

Now, to calculate the molar mass of FeS, you just have to add the molar mass of all the individual atoms that are present in FeS.

You can see that in FeS, there is 1 Iron atom and 1 Sulfur atom.

So, Molar mass of FeS = Molar mass of 1 Iron (Fe) atom + Molar mass of 1 Sulfur (S) atom.
= 55.845 + 32.06
= 87.905 g/mol

Hence the Molar mass of FeS is 87.905 g/mol.

I hope you have understood the short and simple calculation for finding the molar mass of FeS.

Remember

• In some books, you may see the unit of molar mass as grams/mole or g/mole. But all these units (i.e g/mol, grams/mole and g/mole) are the same.
• Always follow the calculation order to avoid any mistakes in calculation. First solve the brackets, then multiplications and at last do the final addition.
• And don’t forget to put the unit g/mol to your final calculated molar mass.

Check out other related topics for more practice;
PbS Molar Mass
Styrene (C8H8) Molar Mass
C4H8 (1-Butene) Molar Mass
KHCO3 (Potassium bicarbonate) Molar Mass
KNO2 (Potassium nitrite) Molar Mass

Author
##### Jay Rana

Jay is an educator and has helped more than 100,000 students in their studies by providing simple and easy explanations on different science-related topics. With a desire to make learning accessible for everyone, he founded Knords Learning, an online learning platform that provides students with easily understandable explanations.