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Molar Mass Calculator
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Molar Mass Calculator or Molecular Weight Calculator is used to calculate the Molar Mass or Molecular Weight of the given chemical formula. The term Molar Mass is used all the time in chemical calculations, so we need to know what it means. First it is a mass so it has units of mass commonly the gram. Second it concerns the mole (Avagadro's number), Whether we are dealing with elements or compounds, the Molar Mass of a species is the mass in grams of one mole (6.022 x 1023) of that species: one mole of atoms, one mole of molecules or one mole of formula units.

Two important facts to remember
1. One mole of an element is 6.022 x 1023 atoms of that element.
2. One mole of an element is an amount of that element equal to its molar mass (an amount equal to its atomic mass in grams).
We know that 1 mole of any element = 1 molar mass of that element = 6.022 x 1023 atoms of that element. So molar mass of any element = the atomic mass of that element in grams.Below is given a default chemical formula you can just see how the molar mass is calculate using the calculator.
 

How to Calculate Molar Mass?

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Step 1 :  

Observe the given chemical formula.



Step 2 :  

Add the atomic mass of individual element in order to get molar mass of the given compound.



Molar Mass Calculator Problems

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  1. Calculate the Molar Mass of NaCl?


    Step 1 :  

    Given Chemical Formula: NaCl



    Step 2 :  

    For the element Na(Sodium)


    Atomic mass of 1 atom of sodium = 22.989768


    For the element Cl(Chlorine)


    Atomic mass of 1 atom of chlorine = 35.4527


    So, the Molar Mass = The molar mass of one atom of sodium + The molar mass of one atom of chlorine


    Molar Mass = 22.989768 + 35.4527


    Molar Mass = 58.442468



    Answer  :  

    Molar Mass of NaCl = 58.442468



  2. Calculate the Molar Mass of FeCl2?


    Step 1 :  

    Given Chemical Formula: FeCl2



    Step 2 :  

    For the element Fe(Iron)


    Atomic mass of 1 atom of iron = 55.847


    For the element Cl(Chlorine)


    Atomic mass of 2 atom of chlorine = 2(35.4527) = 70.9054


    So, the Molar Mass = The molar mass of one atom of iron + The molar mass of two atom of chlorine


    Molar Mass = 55.847 + 70.9054


    Molar Mass = 126.7524



    Answer  :  

    Molar Mass of FeCl2 (Iron(II) Chloride) = 126.7524



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