Suggestions to Teachers: Designed to Accompany the Elementary Principles of ChemistryD. Appleton, 1901 - 48 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 5
Pagina 10
... final result , but of correct reasoning and method . Since this experiment involves quantitative meas- urement , it is well to bring out an important matter , after a record has been read , by questions somewhat like these : You say ...
... final result , but of correct reasoning and method . Since this experiment involves quantitative meas- urement , it is well to bring out an important matter , after a record has been read , by questions somewhat like these : You say ...
Pagina 17
... final heating . The mixture does not become thoroughly dry on the water - bath . But little alcohol is needed . The tendency is to use an excess , which adds to the difficulty of evaporation . I find that 75 per cent of the class ...
... final heating . The mixture does not become thoroughly dry on the water - bath . But little alcohol is needed . The tendency is to use an excess , which adds to the difficulty of evaporation . I find that 75 per cent of the class ...
Pagina 19
... difference of 2,500 in the final result . Number 62 / 2. - Problems solved : S = 31.8 = 50 % SO2 = 63.6 Fe 02 = 31.8 = 50 % 100 = 55.6 = 63.6 % S = 31.8 = 36.4 % FeS = 87.4 100 Zn S H2 S = 64.9 = 67.1 % = SUGGESTIONS TO TEACHERS 19.
... difference of 2,500 in the final result . Number 62 / 2. - Problems solved : S = 31.8 = 50 % SO2 = 63.6 Fe 02 = 31.8 = 50 % 100 = 55.6 = 63.6 % S = 31.8 = 36.4 % FeS = 87.4 100 Zn S H2 S = 64.9 = 67.1 % = SUGGESTIONS TO TEACHERS 19.
Pagina 25
... Final temperature = 100 ° 5.75 in . Rise in temperature = 82 ° Initial volume = 12.5 c.c. 24.25 in . Final volume = 15.3 c.c. Initial vol . at 1 in . and 18 ° . Initial length of column : Final length of column = Initial pressure = 30-7 ...
... Final temperature = 100 ° 5.75 in . Rise in temperature = 82 ° Initial volume = 12.5 c.c. 24.25 in . Final volume = 15.3 c.c. Initial vol . at 1 in . and 18 ° . Initial length of column : Final length of column = Initial pressure = 30-7 ...
Pagina 28
... final product is SnO2 . The reaction is sufficiently expressed by the equa- tion : 3Sn + 4HNO3 = 3SnO2 + 4NO + 2H2O . 3SnO2 + 4NO The quantitative result is very satisfactory . The value , 28 THE ELEMENTARY PRINCIPLES OF CHEMISTRY.
... final product is SnO2 . The reaction is sufficiently expressed by the equa- tion : 3Sn + 4HNO3 = 3SnO2 + 4NO + 2H2O . 3SnO2 + 4NO The quantitative result is very satisfactory . The value , 28 THE ELEMENTARY PRINCIPLES OF CHEMISTRY.
Alte ediții - Afișează-le pe toate
Suggestions to Teachers: Designed to Accompany the Elementary Principles of ... A. V. E. Young Nu există previzualizare disponibilă - 2015 |
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