Chemical News and Journal of Industrial Science, Tomy 121-122Chemical news office., 1920 |
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Strona 10
... oxidation of nitrogen , and secondly by combining nitrogen and hydrogen to form ammonia and the com- bustion of this ... oxide is transformed by contact with the oxygen in the air into N2O3 , NO2 , and N204 ( which is only stable above ...
... oxidation of nitrogen , and secondly by combining nitrogen and hydrogen to form ammonia and the com- bustion of this ... oxide is transformed by contact with the oxygen in the air into N2O3 , NO2 , and N204 ( which is only stable above ...
Strona 15
... oxide ; 3 mgrms . of ferric oxide ; 2.5 mgrms . of thorium oxide ; 16 mgrms . of zirconium oxide ; 03 mgrms . of chromic oxide ; 01 to 0.2 mgrms , of alumina . The order of power of precipitation varies with the substance to be ...
... oxide ; 3 mgrms . of ferric oxide ; 2.5 mgrms . of thorium oxide ; 16 mgrms . of zirconium oxide ; 03 mgrms . of chromic oxide ; 01 to 0.2 mgrms , of alumina . The order of power of precipitation varies with the substance to be ...
Strona 19
... oxide , and the latter of a chemical union of the elements carbon and silicon . Aluminous abrasives occur in nature as minerals in the form of emery and corundum . Aluminous abrasives are also manufactured by electric fur- nace methods ...
... oxide , and the latter of a chemical union of the elements carbon and silicon . Aluminous abrasives occur in nature as minerals in the form of emery and corundum . Aluminous abrasives are also manufactured by electric fur- nace methods ...
Strona 20
... oxide . Alundum abrasives contain more than 92 per cent of this cutting element , and a special alundum known as No. 38 contains more than 98 per cent aluminum oxide . Practically no magnetic iron oxide is present in these abrasives ...
... oxide . Alundum abrasives contain more than 92 per cent of this cutting element , and a special alundum known as No. 38 contains more than 98 per cent aluminum oxide . Practically no magnetic iron oxide is present in these abrasives ...
Strona 31
... oxide is much higher than that of the sodium fluoride . This is manifested by the high melting point , low conductivity , low solu- bility , and hardness of magnesium oxide . Phosphorus ( N = 15 ) and sulphur ( N = 16 ) have ...
... oxide is much higher than that of the sodium fluoride . This is manifested by the high melting point , low conductivity , low solu- bility , and hardness of magnesium oxide . Phosphorus ( N = 15 ) and sulphur ( N = 16 ) have ...
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