A railroad locomotive’s boiler produces steam at 250oC and 22.00 atm. Four cylinders, each holding 57.5 L, must be filled with steam for every revolution of the locomotive’s wheels. A. Calculate the number of grams of water needed to fill one cylinder with steam. B. The locomotive travels 6.8m per each revolution of its wheels. How many Kg of water will it consume per kilometer traveled?
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
A railroad locomotive’s boiler produces steam at 250oC and 22.00 atm. Four cylinders, each holding 57.5 L, must be filled with steam for every revolution of the locomotive’s wheels.
A. Calculate the number of grams of water needed to fill one cylinder with steam.
B. The locomotive travels 6.8m per each revolution of its wheels. How many Kg of water will it consume per kilometer traveled?
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