**Molar mass of Al2S3 (Aluminum sulfide) is ****150.144 g/mol****.**

Well, now you have come to know the molar mass of Al2S3.

But how can you get this value?

Let me show you the calculation to get the molar mass of Al2S3 (Aluminum 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.

## Al2S3 (Aluminum sulfide) Molar Mass Calculation

If you have a periodic table with you, then you can easily calculate the molar mass of Al2S3 (Aluminum 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 Al2S3 (Aluminum 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 Al2S3, there are 2 Aluminum atoms and 3 Sulfur atoms.

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

You can see that;

The molar mass of Aluminum is **26.982 g/mol**. ^{[1]}

The molar mass of Sulfur is **32.06 g/mol**. ^{[2]}

Now, to calculate the molar mass of Al2S3, you just have to add the molar mass of all the individual atoms that are present in Al2S3.

You can see that in Al2S3, there are 2 Aluminum atoms and 3 Sulfur atoms.

**So, Molar mass of Al2S3 = Molar mass of 2 Aluminum (Al) atoms + Molar mass of 3 Sulfur (S) atoms.****= (26.982) 2 + (32.06) 3****= 53.964 + 96.18****= 150.144 g/mol**

**Hence the Molar mass of Al2S3 is ****150.144 g/mol****.**

I hope you have understood the short and simple calculation for finding the molar mass of Al2S3.

**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;**

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Ferrocene (C10H10Fe) Molar Mass

2 Methyl 2 butanol (C5H12O) Molar Mass

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.

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