The New chemistryD. Appleton and Company, 1875 - 326 páginas |
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Página 73
... express its molecular weight ; but , on account of certain relations of our subject , not yet explained , which make the half - molecule a more convenient unit , we use for the molecular weights a set of numbers twice as large as they ...
... express its molecular weight ; but , on account of certain relations of our subject , not yet explained , which make the half - molecule a more convenient unit , we use for the molecular weights a set of numbers twice as large as they ...
Página 116
... express the proportions in which each of two elements combines with a third , express also the proportions in which they unite with each other . Thus , 71 parts of chlorine combine with either 32 parts of sulphur or with 56 parts of ...
... express the proportions in which each of two elements combines with a third , express also the proportions in which they unite with each other . Thus , 71 parts of chlorine combine with either 32 parts of sulphur or with 56 parts of ...
Página 117
... express the relative weight of the different atoms . Assume further that combination consists merely in the union between atoms , and that chemical changes are deter- mined by their aggregation , separation , or displace- ment , and we ...
... express the relative weight of the different atoms . Assume further that combination consists merely in the union between atoms , and that chemical changes are deter- mined by their aggregation , separation , or displace- ment , and we ...
Página 120
... express the molecular weight of the substance in these units . In- stead , however , of taking the hydrogen - molecule as our unit , we selected the half - hydrogen molecule for that purpose , and called its weight a microcrith , thus ...
... express the molecular weight of the substance in these units . In- stead , however , of taking the hydrogen - molecule as our unit , we selected the half - hydrogen molecule for that purpose , and called its weight a microcrith , thus ...
Página 136
... proceeding to show how admirably this system is suited to express chemical changes , let me ask your attention for a moment to the nature of the SYMBOL OF ALCOHOL , HOW DETERMINED . 137 evidence by 136 CHEMICAL SYMBOLS .
... proceeding to show how admirably this system is suited to express chemical changes , let me ask your attention for a moment to the nature of the SYMBOL OF ALCOHOL , HOW DETERMINED . 137 evidence by 136 CHEMICAL SYMBOLS .
Palavras e frases frequentes
acetic ether aëriform alcohol alkali atom of oxygen atoms of hydrogen Avogadro burning butyric acid calcic called carbonic dioxide charcoal chemical change chemist chemistry chlorine color combination combustion consists contain criths cubic cubic centimetres cule definite elementary substances elements energy equal ether evidence example experiment fact film flame formic acid gases glass grammes H₂O heat Hence hydrate hydrochloric acid hydrogen hydrogen gas hydrogen-atoms illustrate inch iron lecture light liquid litre mass material metal microcriths mole molecular structure molecular weight molecule of oxygen molecule of water molecules nitric acid nitro-glycerine nitrogen nitrous oxide notice number of molecules obtained oxide oxygen oxygen gas particles phenomena phosphorus polarized pole potassic pounds pressure principle proportions quantivalence radical reaction result salt simple sodium solid solution specific gravity sugar sulphur symbol temperature theory tion vapor volatile volume wholly
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