formulae; relative masses of atoms and molecules; the mole and the avogadro constant

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10 Terms

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molecular formula

gives the type of element and how many are involved

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diatomic molecules

exists as molecules made up of two atoms

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empirical formula

the most simplified version of a compound (C2H6→CH3)

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relative atomic mass

the average mass of the isotopes of an element compared to the 1/12th of the mass of an atom of C-12

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relative formula mass

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mole

a unit which measures the amount of substance (unit=mol)

<p>a unit which measures the amount of substance (unit=mol)</p>
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molar mass

the mass of 1 mole of a subtance (unit=g/mol)

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mol/mass/Mr formula

m= mass

Mr= molecular mass

mol= mole

<p>m= mass</p><p>Mr= molecular mass</p><p>mol= mole</p>
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conversion between cm³ and dm³

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concentration of a solution formula

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