Suggestions to Teachers: Designed to Accompany the Elementary Principles of ChemistryD. Appleton, 1901 - 48 pagini |
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Pagina 25
... first and second steps , before beginning . Of late I have been using the commercial precipitated chalk instead of marble dust for the calcium carbonate , and , on the whole , I believe , like it better . SUGGESTIONS TO TEACHERS 25.
... first and second steps , before beginning . Of late I have been using the commercial precipitated chalk instead of marble dust for the calcium carbonate , and , on the whole , I believe , like it better . SUGGESTIONS TO TEACHERS 25.
Pagina 29
... carbonate is designated as dry and chemically pure in the dealers ' catalogues . It is first heated gently as a precaution , although probably dry enough without heating . There is need of care that the heating be not excessive , for ...
... carbonate is designated as dry and chemically pure in the dealers ' catalogues . It is first heated gently as a precaution , although probably dry enough without heating . There is need of care that the heating be not excessive , for ...
Pagina 30
... carbonate was studied from different standpoints . Number 156. - Solution of problems : 1. 92.30 11.9 7.76 . 7.70 2. 40 . 1 = 7.70 . Ratio 1 : 1 ; but ( 38 × 2 ) ÷ 12.9 5.8 ; hence the multiple by six is chosen , C.H .. 11.93.36 . Ratio ...
... carbonate was studied from different standpoints . Number 156. - Solution of problems : 1. 92.30 11.9 7.76 . 7.70 2. 40 . 1 = 7.70 . Ratio 1 : 1 ; but ( 38 × 2 ) ÷ 12.9 5.8 ; hence the multiple by six is chosen , C.H .. 11.93.36 . Ratio ...
Pagina 37
... carbonate and sodium carbonate and phosphate may suitably be supplied in solu- tion . Equations completed : Mg + 0 MgO . = Mg + 2H2O = MgO2H2 + 2H . Mg + 2HCl = MgCl2 + 2H . Mg + H2SO4 = MgSO4 + 2H . MgSO4 + 2NaOH = MgO2H2 + NagSO4 ...
... carbonate and sodium carbonate and phosphate may suitably be supplied in solu- tion . Equations completed : Mg + 0 MgO . = Mg + 2H2O = MgO2H2 + 2H . Mg + 2HCl = MgCl2 + 2H . Mg + H2SO4 = MgSO4 + 2H . MgSO4 + 2NaOH = MgO2H2 + NagSO4 ...
Pagina 44
... carbonate , crys . , or sodium phosphate , crys . , c . p . , Exps . 21/8 , and 496 . Sodium hydroxide ( caustic ) , pure , sticks . Sodium chloride , commercial , Exps . 22 and 24 / .. Paraffin , white , hardest . Mercury , Exps . 40 ...
... carbonate , crys . , or sodium phosphate , crys . , c . p . , Exps . 21/8 , and 496 . Sodium hydroxide ( caustic ) , pure , sticks . Sodium chloride , commercial , Exps . 22 and 24 / .. Paraffin , white , hardest . Mercury , Exps . 40 ...
Alte ediții - Afișează-le pe toate
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Suggestions to Teachers: Designed to Accompany the Elementary Principles of ... Abram Eps Van Young Nu există previzualizare disponibilă - 2016 |
Suggestions to Teachers: Designed to Accompany the Elementary Principles of ... A. V. E. Young Nu există previzualizare disponibilă - 2018 |
Termeni și expresii frecvente
2H₂O 2HCl 2NaOH acetylene alcohol Ammonium chloride apparatus APPLETON AND COMPANY barium chloride Botany bottle Boyle's Law CaCl2 calcium carbide carbonate catalogues cents Charles's Law chemical chlorate class results class room Clodd Cloth CO₂ College color combining weight Combustion commercial cork crys dealers diameter dilute dioxide dust Evaporating dish experiment flame give glass grams Green & Company H₂O heat hydrochloric acid hydrogen hydroxide ignite Illustrations inches instructor iodine laboratory lecture table liters magnesium matter mercury method MgSO4 naphthalene nitrate nitric acid Number oxide oxygen paper phosphorus Plant Relations potassium potassium chlorate powd powder preferable PRINCIPLES OF CHEMISTRY Professor pupil pure quantitative result quantity quizzing ratio reaction recommended rubber sample SHELDON AMOS side table sodium Sodium carbonate sodium oxide solution specific gravity stopper student sulphuric acid supplied temperature test-tubes tion topics tube TWENTIETH CENTURY TEXT-BOOKS University volume zinc