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    My revision guide says that relative masses have no units. Although, relative masses are the same as molar mass. And molar mass has an unit!( g/mol)
    I'm confused!!!!
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    https://www.wikiwand.com/en/Relative_atomic_mass

    Relative masses are the ratio between the mass of an atom/ion/whatever and 1/12 the mass of and atom of Carbon-12. Therefore is dimensionless.
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    (Original post by alow)
    https://www.wikiwand.com/en/Relative_atomic_mass

    Relative masses are the ratio between the mass of an atom/ion/whatever and 1/12 the mass of and atom of Carbon-12. Therefore is dimensionless.
    Thank you!!!! But what is molar mass????
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    (Original post by Angelin Ravi)
    Thank you!!!! But what is molar mass????
    The mass of a mole of a compound. Measured in gmol-1.
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    (Original post by alow)
    The mass of a mole of a compound. Measured in gmol-1.
    Yeah but
    Number of moles= mass divided by molar mass.
    So in my GCSEs if they ask me to calculate the relative atomic mass then what unit do I put with it???
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    (Original post by Angelin Ravi)
    Yeah but
    Number of moles= mass divided by molar mass.
    So in my GCSEs if they ask me to calculate the relative atomic mass then what unit do I put with it???
    Relative atomic mass is dimensionless.
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    (Original post by alow)
    Relative atomic mass is dimensionless.
    Ohhhh now I understand thanks.
 
 
 
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