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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) 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 condition (1atm and 25 degrees celcius) a)Coal , C (s, graphite) b) Natural gas, CH4(g) c) Propane, C3H8 (g) d) Octane, C8H18 (l) ( delta Hf= -250.1 kJ . mol ^-1 All these answers have to be in mol.MJ^-1
What principle explains the solubility of a substance in aqueous acid or aqueous base
A pipette is used to add 46 mL of 0.3 M Pb(NO3)2 to a 273.0 mL solution of 0.3 M NaF. Determine the equilibrium concentration of Pb2+(aq) in the final solution. Ksp(PbF2)=3.6E-8
An unknown is believed to be an alcohol because the IR spectrum showed broad absorption at 3200-3500 cm-1 and no absorption in the 1700-1750 cm-1 region.
A particular reaction has a DH value of -114 kJ and DS of -296 J/mol K at 298 K. Assuming that DH and DS hardly change with temperatur, determine the temperature in C at which the spontaneity of this reaction changes.
Analysis of a carbohydrate showed that it consisted of 40.0 % C, 6.71 % H and 53.3 % O by mass. Its molecular mass was found to be between 140 and 160 amu. What is the molecular formula of this compound?
Calculate the pH of the solute in an aqueous solution of 0.372 M (CH3)3N(aq) if the Kb is 6.5 Ã- 10âˆ'5.
A disinfectant states that it will kill 99.9% of bacteria if left on for 45 minutes. What percentage of bacteria are killed if the disinfectant is left on only for 5 minutes
How many kilowatt-hours of energy are necessary to heat the air in the house from 5degree C to 25degree C
Styrene, phenylethene, is treated with H3PO4, an acid whose conjugate base is a poor nucleophile.
What is the molar mass of the compound? Express your answer to two significant figures and include the appropriate units
Explain the meaning of the term condensation reaction in organic chemistry. 3.) explain how you would show experimentally that 2 particular organic compounds were optical isomers of each other.
Discuss the differences observed in the IR and NMR spectra of 3-nitrophthalic acid and luminal that are consistent with reduction of the nitro function to an amino group
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