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Chemistry formula question?

What is the difference between Relative formula mass, molecular formula and empirical formula? I am sooooooo confused rn

Thankyou :smile:

And if anyone has any revision sources on these that would be fabulous!
(edited 7 years ago)
Original post by rm715
What is the difference between Relative formula mass, molecular formula and empirical formula? I am sooooooo confused rn

Thankyou :smile:

And if anyone has any revision sources on these that would be fabulous!


Relative formula mass is all of the relative atomic masses added together (bigger number from the periodic table). So for H2O it'd be 1+1+16 (two hydrogens and one oxygen)

Molecular Formula is the chemical formula of a molecule, this could be something like H4O2

Empirical Formula is the Molecular Formula in it's simplest ratio, so for the above example it'd be H2O
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rm715
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Original post by thomassbryan
Relative formula mass is all of the relative atomic masses added together (bigger number from the periodic table). So for H2O it'd be 1+1+16 (two hydrogens and one oxygen)

Molecular Formula is the chemical formula of a molecule, this could be something like H4O2

Empirical Formula is the Molecular Formula in it's simplest ratio, so for the above example it'd be H2O


Ah saviour, thankyou so much!:biggrin:
Original post by rm715
Ah saviour, thankyou so much!:biggrin:


You're very welcome :smile:

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