A home swimming pool contains 156 m3 of water. At the beginning of swimming season, the water must be heated from 20.0°C to 30.0°C. a) How much energy (in kJ) must be supplied? b) If a natural gas heater supplies this energy with an 75.3 % heat transfer efficiency, how many grams of methane must be burned? (The heat of combustion of methane is -803 kJ/mol.)
A home swimming pool contains 156 m3 of water. At the beginning of swimming season, the water must be heated from 20.0°C to 30.0°C. a) How much energy (in kJ) must be supplied? b) If a natural gas heater supplies this energy with an 75.3 % heat transfer efficiency, how many grams of methane must be burned? (The heat of combustion of methane is -803 kJ/mol.)
Physical Chemistry
2nd Edition
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Ball, David W. (david Warren), BAER, Tomas
Chapter2: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 2.15E: A7.50-gpiece of iron at 100.0C is dropped into 25.0g of water at 22.0C. Assuming that the heat lost...
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