A popular chemistry; . O? 36. What would be the volume of the O of Question 35 under thestandard conditions?* 37. What would be the volume of the O at 12° C. and under a pressureof 740 mm. of mercury? 38. What would be the volume of the O of Question 16 at 20° C. and750 mm. ? 39. How much K01O3 must be employed to make an amount of Owhich shall measure 100 liters at 18° C. and 760 mm. ? , N ^tomic Weight, 14 Specific Gravity, 0,97, This gas is called nitrogen because it exists inniter. Occurrence.—N forms about | of the atmosphere,and is found abundantly in nitrates {, saltp
A popular chemistry; . O? 36. What would be the volume of the O of Question 35 under thestandard conditions?* 37. What would be the volume of the O at 12° C. and under a pressureof 740 mm. of mercury? 38. What would be the volume of the O of Question 16 at 20° C. and750 mm. ? 39. How much K01O3 must be employed to make an amount of Owhich shall measure 100 liters at 18° C. and 760 mm. ? , N ^tomic Weight, 14 Specific Gravity, 0,97, This gas is called nitrogen because it exists inniter. Occurrence.—N forms about | of the atmosphere,and is found abundantly in nitrates {, saltpeter),ammonia, flesh,f and in such vegetables as the mush-room, cabbage, horse-radish, etc. It is an essentialconstituent of the valuable medicines, quinine andmorphine, and of the potent poisons, prussic acidand strychnine. * The weight of a liter of O under standard pressure and at standardtemperature is gram. t Its compounds give to burnt hair and woolen their peculiar odor. 28 INORGANIC CHEMISTRY. Pig. Preparing N. Preparation.—As the air consists almost exclusivelyof N and 0, the easiest method of obtaining the formergas is to remove the latter by employing it to oxidizesome substance. The substance should be one whichforms an oxide which is solid, liquid, or readily soluble, so that no gaseous prod-uct may be left mixedwith the N. Place in thecenter of a deep dish ofwater a little stand sev-eral inches in height, onwhich a bit of phos-phorus may be laid andignited. As the fumesof phosphorus pentoxideascend, invert a receiverover the stand. The phosphorus will consume the 0of the air contained in the jar, leaving the N. Afterthe jar has cooled it will be found that the N occu-pies f of the receiver. The jar will at first be filledwith white fumes (P205), but they will be absorbedby the H20 in a short time. Properties.—N is of an entirely negative charac-ter. It is colorless, odorless, and tasteless. It neitherburns nor permits any thing else to burn. A ca
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Keywords: ., bookcentury1800, bookdecade18, booksubjectchemistry, bookyear1887
