Exercises in Chemistry: Systematically Arranged to Accompany the Second Revised Edition of "An Elementary Study of Chemistry"Ginn, 1919 - 147 σελίδες |
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Σελίδα 3
... temperatures of various parts of the flame . Turn the gas down until the flame is 7 or 8 cm . in height , then quickly thrust a piece of white cardboard , about 10 cm . square , vertically through the center of the flame , the lower end ...
... temperatures of various parts of the flame . Turn the gas down until the flame is 7 or 8 cm . in height , then quickly thrust a piece of white cardboard , about 10 cm . square , vertically through the center of the flame , the lower end ...
Σελίδα 23
... Temperature of air . Vapor pressure at temperature of air ( see CC . Appendix ) . mm . Barometric pressure mm . Effective pressure on gas in tube ( barometric pressure less vapor pressure ) . mm . From the above values calculate what ...
... Temperature of air . Vapor pressure at temperature of air ( see CC . Appendix ) . mm . Barometric pressure mm . Effective pressure on gas in tube ( barometric pressure less vapor pressure ) . mm . From the above values calculate what ...
Σελίδα 24
... temperature . The tube A is now removed and a gentle suction is applied to the glass jet E. The water siphons over , through the tube C , into the beaker and is allowed to run for a moment so as to fill completely both the rubber and ...
... temperature . The tube A is now removed and a gentle suction is applied to the glass jet E. The water siphons over , through the tube C , into the beaker and is allowed to run for a moment so as to fill completely both the rubber and ...
Σελίδα 25
... Temperature of water Barometric reading • Value of vapor pressure ( see Appendix ) sio sio sio g . g . g . g . CC . O sio mm . mm . From your results calculate the weight of 1 liter of oxygen under standard conditions ; also calculate ...
... Temperature of water Barometric reading • Value of vapor pressure ( see Appendix ) sio sio sio g . g . g . g . CC . O sio mm . mm . From your results calculate the weight of 1 liter of oxygen under standard conditions ; also calculate ...
Σελίδα 27
... temperatures may generally be separated more or less perfectly . The process is termed fractional distillation . EXERCISE 14 THE COMPOSITION OF WATER Apparatus . Hydrogen generator and tubes as shown in Fig . 28 and described below ...
... temperatures may generally be separated more or less perfectly . The process is termed fractional distillation . EXERCISE 14 THE COMPOSITION OF WATER Apparatus . Hydrogen generator and tubes as shown in Fig . 28 and described below ...
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acetate alcohol ammonium hydroxide apparatus shown barium chloride beaker boiling bromide Bunsen flame calcium chloride carbon dioxide charcoal common salt compounds cool copper oxide copper sulfate cork crystals dish dissolved distilled water evaporate evaporating-dish EXERCISE experiment filter paper filtrate flask formed funnel tube glass plate glass rod glass tube hard-glass test tube hydrochloric acid insert iron laboratory limewater liquid litmus paper manganese dioxide Materials mixture mouth nitric acid Note the color Note the results odor phosphorus Place porcelain crucible potassium chlorate powdered precipitate PREPARATION AND PROPERTIES preparation of oxygen reaction red litmus paper remove residue ring stand rubber tubing screw clamp shake shown in Fig silver nitrate small beaker sodium carbonate sodium hydroxide sodium hydroxide solution solid soluble solution R. S. stand and burner starch stirring-rod stopper strips sulfuric acid temperature test tube volume watch glass weight wide-mouthed bottle wire wooden splint zinc
Δημοφιλή αποσπάσματα
Σελίδα 136 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg 10 dekagrams =1 hektogram Hg 10 hektograms =1 kilogram Kg...
Σελίδα 33 - Put one fourth of a test tube full of bone black into a small flask and pour over it about 50 cc. of water, to which has been added a few drops of a solution of litmus or of indigo.
Σελίδα 135 - Measures of Length 10 millimeters (mm) =1 centimeter cm 10 centimeters =1 decimeter dm 10 decimeters =1 meter m 10 meters =1 dekameter Dm 10 dekameters =1 hektometer Hm 10 hektometers =1 kilometer Km...
Σελίδα 134 - Aluminium Antimony Arsenic Barium Bismuth Boron Bromine Cadmium Calcium Carbon Chlorine Chromium Cobalt Copper Fluorine Gold Hydrogen Iodine Iron Lead Lithium Magnesium Manganese Mercury Nickel Nitrogen Oxygen Phosphorus Platinum Potassium Silicon Silver Sodium Strontium Sulphur Tin Zinc Sym.
Σελίδα 83 - Phosphorous acid. Pour into a test tube about 0.5 cc. of phosphorus trichloride (hood) and add a little water, a drop at a time. What gas is evolved (R) ? Finally, add about 5 cc. of water, pour the liquid into an evaporatingdish, and evaporate to a sirupy mass. Dilute this with a little water, transfer the solution to a test tube, and add a few drops of a solution of silver nitrate. Boil the resulting mixture. A black precipitate forms. Explain.