. Elementary physics and chemistry: second stage . Fig. 42.—The calorimeters is placed on pieces of cork in the small can /' in order to prevent loss of heat during an e,\periment. Determine the mass of the vessel and water together. Sub- tract the previously determined mass of the vessel, and the result will give you the mass of the vvater used. Record your results as follows : Mass of vessel, - gms. Temperature of ves- sel, - - - °C. Mass of water, - gms. Resulting tempera- ture, - - - °C. Heat-units given up by hot water, - calories. Rise of temperature of vessel, - - ° C. The number of hea
. Elementary physics and chemistry: second stage . Fig. 42.—The calorimeters is placed on pieces of cork in the small can /' in order to prevent loss of heat during an e,\periment. Determine the mass of the vessel and water together. Sub- tract the previously determined mass of the vessel, and the result will give you the mass of the vvater used. Record your results as follows : Mass of vessel, - gms. Temperature of ves- sel, - - - °C. Mass of water, - gms. Resulting tempera- ture, - - - °C. Heat-units given up by hot water, - calories. Rise of temperature of vessel, - - ° C. The number of heat-units required to raise the temperature of the vessel through a certain number of degrees is thus obtained, and from the result the number of heat- units required to raise the tempera- ture of the vessel through one* degree can be calculated. The result is called the ivater equiva- lent or water value of the vessel used, and has to be taken into consideration when exact measurements of heat quantity are made.
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