This blog will cover and explain the specification for Edexcel triple science course 2013 Chemistry. Hope it helps :)
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Nitrogen - 78.08%Oxygen - 20.95%Argon - 0.93%Carbon dioxide - 0.038%Neon - 0.0018%Helium - 0.0005%Krypton - 0.0001%Hydrogen - 0.00005%Xenon - 0.000009%
Nitrogen N2 78.084Oxygen O2 20.947Argon Ar 0.934Carbon dioxide CO2 0.0350Neon Ne 0.001818Helium He 0.000524Methane CH4 0.00017Krypton Kr 0.000114Hydrogen H2 0.000053Nitrous oxide N2O 0.000031Xenon Xe 0.0000087Ozone* O3 trace to 0.0008Carbon monoxide CO trace to 0.000025Sulfur dioxide SO2 trace to 0.00001Nitrogen dioxide NO2 trace to 0.000002Ammonia NH3 trace to 0.0000003
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