The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 343
... chemical element that have different atomic masses ) . The atomic weight of carbon is 12.011 , the average that reflects the typical ratio of natural abundances of its isotopes . The concept of atomic weight is basic to chemistry , be ...
... chemical element that have different atomic masses ) . The atomic weight of carbon is 12.011 , the average that reflects the typical ratio of natural abundances of its isotopes . The concept of atomic weight is basic to chemistry , be ...
Page 350
... chemical insights , especially concerning the problem of what substances should be considered as chemical ele- ments . Boyle had shown conclusively that the traditional four " elements " were certainly not elementary sub- stances , but ...
... chemical insights , especially concerning the problem of what substances should be considered as chemical ele- ments . Boyle had shown conclusively that the traditional four " elements " were certainly not elementary sub- stances , but ...
Page 994
... chemical changes in. particularly responsible for dramatizing the successful application of chemistry to the study of biology . Liebig studied chemistry in Paris and carried back to Germany the inspiration gained by contact with the ...
... chemical changes in. particularly responsible for dramatizing the successful application of chemistry to the study of biology . Liebig studied chemistry in Paris and carried back to Germany the inspiration gained by contact with the ...
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