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Many power plants produce energy by burning carbon-based fuels, which also produces carbon dioxide. Carbon dioxide is a greenhouse gas, so over-production can have negative effects on the environment. Use enthalpy of formation data to calculate the number of moles of CO2(g) produced per megajoule of heat released from the combustion of each fuel under standard conditions (1 atm and 25 °C).
Each must be in mol * MJ^-1
(a) coal, C(s, graphite)(b) natural gas, CH4(g);(c) propane, C3H8(g);(d) octane, C8H18(l) (?Hf° = -250.1 kJ ·mol^-1).
water to form dissolved boric acid, H3BO3, and hydrogen sulfide gas. What is the balanced Equation?
The combustion of 135mg of an unknown hydrocarbon produces 440mg of CO2 and 135mg of H2O. The molar mass of hydrocarbon is 270g/mol. determine the empirical and the molecular formulas of the hydrocarbon
It takes 51.0 J to raise the temperature of an 11.0 g piece of unknown metal from 13.0 degrees celcius to 24.0degrees celcius What is the specific heat for the metal? Express your answer numerically, in Joules/gram Degrees celcius
A liquid has a H vaporization of 35.5kJ/mol and a boiling point 0f 122 degrees celcius at 1.00 atm.What is its vapour pressure at 109 degrees celcius.
Compare the orbital electronic configuration for K and Rb (s block), Hf and Zr (d block), F and Cl (p block). For each element, which ionic configuration should be the most stable?
The water bath conatins 2.90 kg of water at 27.6 degrees celcuis. During the reaction 110 kj of heat flows out of the flask into the bath. Calculate the new temperature of the water bath
Lithium has an atomic mass of 6.9409 amu. What is the percent abundance of lithium-6?
calculate the approximate concentration of the solution in mol/kg and determine the volume change of the ballon when it ascends from 1 atm pressure to 240 torr pressure ?
A buffer solution is prepared by dissolving 1.50g each of benzioc acid C6H5CO2H and sodium benzoate NaC6H5CO2 in 150.0mL of solution.
What mass of zinc oxide can be produced from the reaction of 415 g zinc sulfide with 265 g of oxygen gas? The other product is sulfur dioxide.
What is the ratio of ground state energy of atomic hydrogen
The coal that is burned is a form of pure carbon. (Diamonds and graphite are other forms of pure carbon). A sample of coal is completely burned in a 10.0 L cylinder at a constant pressure of 1.10 atm and a temperature of 1000 oC.
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