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13 Cards in this Set
- Front
- Back
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Relative atomic mass |
Weighted mean mass of atom of an element/1/12th mass of an atom of c-12 |
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Relative isotopic mass |
Mass of atom of an isotope/1/12th mas of an atom of c-12 |
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Relative molecular mass |
Mass of molecule of a substance/1/12th mass of an atom of c-12 |
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Relative formulae mass |
Mass of a unit of a substance/1/12th mass of a c-12 atom |
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Ideal gas equation |
Pressure(PA- kpa x10³) x volume (m³- dm divide by 1000 cm to metres x 1000000 )= Namout of substance(moles) x R gas constant x temperature (k +273) |
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Avogadro constant |
Avogadro constant= number if atoms/ number of moles |
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Amount of substance |
Amount of substance= mass of substance/ molar mass |
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Concentration |
Concentration= moles/volume |
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Percentage yeild |
Percentage yield= actual yield/ theoretical yield x 100 |
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For gas at RTP |
Moles= volume/24 |
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Atom economy |
Atom economy= molar mass of desired products/ sum of molar masses of all products x 100 |
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Percentage uncertainty |
+/- uncertainty of measurement/ measured value x100 |
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Energy transfered |
Energy transfered= mass x specific heat capacity x temperature change |
