Numerical Examples in Heat |
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76 centimetres pressure Answer apparent mass aqueous vapour barometer barometric pressure Boyle's law brass bulb calorimeter capacity centi Centigrade centimetres of mercury Charles's law coefficient of cubical coefficient of expansion coefficient of linear contained copper cubic centimetres cubic metre cubical expansion cylinder density of mercury diameter dry air dynamical equivalent equal expansion of mercury feet filled foot-pounds grammes of ice grammes of mercury grammes of water heat of steam heat of water heat units height hygrometric kilogrammes of water latent heat length linear expansion litre of air litres maximum pressure mercury column method of Example millimetres mixture number of grammes pendulum perature piston platinum pounds of water pressure of aqueous quantity of air quantity of heat relative density saturated scale specific heat square centimetre square inch steam at 100 stroke subdivisions temperature and pressure thermometer trough volume water at 100 weighed zinc وو
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Page 108 - C. was filled with mercury and then inverted over a mercury bath. One gramme of ether was then passed up into the Torricellian vacuum and the tube was surrounded by a water bath according to the method of Gay Lussac, and the temperature was raised to 85° C. It was then found that the vapour occupied 487-64 cc according to the graduation of the tube, and that the difference of level of the mercury in the tube and in the bath was 14-3 centimetres. The corrected barometric height was 75-4 centimetres....
Page 175 - The specific heat of water is 30 times as great as that of mercury. If a pound of boiling water be mixed with a pound of ice-cold mercury, what will be the final temperature of the mixture ? Answer.
Page 174 - The heat produced by the complete combustion of 1 gramme of carbon in a calorimeter can convert 100 grammes of ice at o° C. into water at o° C. How many grammes of water could be raised by the same amount of heat from o° C. to 1° C. ? (Latent heat of water, 80.) Answer. 8,000 grammes. (M.) (49.) The latent heat of steam being 536, what will be the resulting temperature of 20 litres of water, initially at 4° C., when one kilogramme of steam at 10o° C.
Page 171 - A given quantity of air occupies a volume of 600 cubic inches at a temperature of 20° C. Find the volume which the air will occupy at 100° C., supposing the pressure to remain constant. The coefficient of expansion of air is -003665.
Page 160 - Ibs., and expansion commences when 2 feet of the stroke have been performed. Find the pressure at the end of the stroke, and the percentage of gain in the work done by a given quantity of steam in consequence of expansive working.
Page 120 - C. At the end of half an hour the temperature of the water had risen 4° C., and at the end of 10^ hours the ice had all melted and acquired the same temperature.
Page 1 - In Fahrenheit's thermometer, the freezing point of water is marked 32°, and the boiling point 212° : in the Centigrade, the freezing point is 0°, and the boiling point 100°: in Reaumer's, the freezing point is 0°, and the boiling point 80°.
Page 110 - Latent heat is the quantity of heat which must be communicated to a body in a given state in order to convert it into another state without changing its temperature.
Page 58 - ... level in both branches, and at the zero of both scales. Thus we have, in the short branch, a quantity of air separated from the external air, and at the same pressure. Mercury is then poured into the long branch, so as to reduce the volume of this inclosed air by one-half; it will then be found that the difference of level of the mercury in the two branches is equal to the height of the barometer at the time of the experiment; the compressed air therefore exerts a pressure equal to that of two...
Page 176 - What quantity of injection water must be supplied for each pound of steam which enters the condenser, the latent heat of steam at 212° F. being 966-6? Answer. 21-17 pounds nearly. (Sc. and A.) (64.) The specific heat of zinc is -095, and 280 grammes of zinc are raised to the temperature of 97° C. and immersed in 150 grammes of water at 14° C., contained in a copper calorimeter weighing 96 grammes, the specific heat of copper being -095. What will be the temperature of the mixture, supposing that...