Chemistry, 26.02.2020 01:21 anonymous666s
A coal fired power station converts one third of the coal's energy into electricity and the other two thirds of the energy content of the fuel is rejected to the environment as waste heat. The electrical output of the plant is 1000 MW. About 15% of the waste heat goes up the smokestack (lost) and the other 85% is taken away by cooling water that is drawn from a nearby river. The river has a volumetric flow rate of 100 m^3/s and a temperature of 20 degree C.
a. If you assume that this coal has an empirical formula C_5H_4 and the reaction is a complete combustion, what is the total mass of coal required per day for the current power output assuming the plant runs for 16 hrs per day? The energy density of coal is 35 times 10^6 J/kg. b. What is the volume of CO_2 produced every day by the plant?
c. What would be the river temperature (in degree C) just after it receives the heated cooling water?
Answers: 1
Chemistry, 22.06.2019 11:30, charles8527
If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood
Answers: 2
Chemistry, 22.06.2019 18:20, juansebas35
Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds
Answers: 2
Chemistry, 23.06.2019 00:30, mathwiznot45
Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.
Answers: 1
Chemistry, 23.06.2019 02:40, towelmearowel
Calculate the standard enthalpy of formation of liquid methanol, ch3oh(l), using the following information: c(graphite) + o2 latex: \longrightarrow ⟶ co2(g) latex: \delta δ h° = –393.5 kj/mol h2(g) + o2 latex: \longrightarrow ⟶ h2o(l) latex: \delta δ h° = –285.8 kj/mol ch3oh(l) + o2(g) latex: \longrightarrow ⟶ co2(g) + 2h2o(l) latex: \delta δ h° = –726.4 kj/mol
Answers: 3
A coal fired power station converts one third of the coal's energy into electricity and the other tw...
Social Studies, 30.01.2020 11:42
Mathematics, 30.01.2020 11:42
Mathematics, 30.01.2020 11:42
Social Studies, 30.01.2020 11:42
Mathematics, 30.01.2020 11:42
History, 30.01.2020 11:42
History, 30.01.2020 11:42