Composition of the human body by mass

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Element Amount / kg Amount / Mol.
Oxygen 43 2700
Carbon 16 1300
Hydrogen 7 7000
Nitrogen 1 .8 130
Calcium 1 .0 25
Phosphorus 0 .78 25
Sulphur 0 .14 4 .4
Potassium 0 .14 3 .6
Sodium 0 .10 4 .3
Chlorine 0 .095 2 .7
Magnesium 0 .019 0 .78
Silicon 0 .018 0 .64
Iron 0 .0042 0 .075
Fluorine 0 .0026 0 .14
Zinc 0 .0023 0 .035
Rubidium 0 .00032 0 .0037
Strontium 0 .00032 0 .0037
Bromine 0 .00020 0 .0025
Lead 0 .00012 0 .00058
Copper 0 .000072 0 .0011
Aluminium 0 .000061 0 .0023
Cadmium 0 .000050 0 .00044
Boron < 0 .000048 0 .0044
Barium 0 .000022 0 .00016
Tin < 0 .000017 0 .00014
Iodine 0 .000013 0 .00010
Manganese 0 .000012 0 .00022
Nickel 0 .000010 0 .00017
Gold < 0 .000010 0 .000051
Molybdenum < 0 .0000093 0 .000097
Chromium < 0 .0000018 0 .000035
Caesium 0 .0000015 0 .000011
Cobalt 0 .0000015 0 .000025
Uranium 0 .00000009 0 .00000038
Beryllium 0 .000000036 0 .0000040
Radium 3.1×10-14 1.4×10-13
Chemical composition of the human body by mass