Physics, 10.10.2019 03:00, zhiyar9879
The energy content of a certain food is to be determined in a bomb calorimeter that contains 3 kg of water by burning a 2-g sample of it in the presence of 100 g of air in the reaction chamber. if the water temperature rises by 3.2°c when equilibrium is established, determine the energy content of the food, in kj/kg, by neglecting the thermal energy stored in the reaction chamber and the energy supplied by the mixer. by calculating the rough estimate of the error involved in neglecting the thermal energy stored in the reaction chamber, do you think it is reasonable to disregard the change in the sensible energy content of the reaction chamber in the analysis? the specific heat of water at room temperature is c = 4.18 kj/kg·°c. the constant-volume specific heat of air at room temperature is cv = 0.718 kj/kg·°c.
Answers: 1
Physics, 21.06.2019 18:00, arnold2619
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Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.
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Physics, 22.06.2019 15:30, anahitrejo1
1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?
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