Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure of 160 kpa. the refrigerant absorbs 180 kj/kg of heat from the cooled space, which is maintained at -5°c, and leaves as a saturated vapor at the same pressure. determine
(a) the entropy change of the refrigerant,
(b) the entropy change of the cooled space, and
(c) the total entropy change for this process.
Answers: 2
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What is the maximum amount of al2(so4)3 which could be formed from 15.84 g of al and 12.89 g of cuso4?
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Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
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An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³
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Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-...
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