A certain coal has the following ultimate analysis C=70%, N2=4%, H2=2.5%, O2=3.5%, S2=7%, Ash=5%, Moisture=2% Determine the heating value of fuel in Btu/lb. ANSWER: 11,735.351
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A certain coal has the following ultimate analysis C=70%, N2=4%, H2=2.5%, O2=3.5%, S2=7%, Ash=5%, Moisture=2% Determine the heating value of fuel in Btu/lb.
ANSWER: 11,735.351
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- The enthalpy of combustion of isooctane (C8H18(l)) is -5461 kJ/mol. From data found in appendix G, calculate the enthalpy of formation of C8H18(l): C8H18(l) + 12.5 O2(g) → 8 CO2(g) + 9 H2O(l) ∆Hrxn = -5461 kJ ∆Hf = ___ kJ/mol Correct answer is not 259.2The specific heat of nickel is 0.444 J/g-oC. If 134.2J of heat is added to a 45.3g sample of nickel at 23.25oC, what is the final temperature of the sample in oC? (Final answer: TWO decimal places)Mercury was once used in thermometers and barometers. What amount of heat (in Joules) is absorbed by 95.7 g of mercury at 25.0oC, if the temperature increases to 27.89oC? The specific heat of mercury is 0.140 J/goC? (Final answer: with ONE decimal place)
- When copper(II) sulfate pentahydrate (CuSO4·5 H2O) is heated, it decomposes to the dehydrated form. The waters of hydration are released from the solid crystal and form water vapor. The hydrated form is medium blue, and the dehydrated solid is light blue. The balanced equation is CuSO4·5 H2O(s) --> CuSO4(s) + 5 H2O(g) *heat above the arrow If 5.32 g CuSO4·5 H2O is decomposed to CuSO4, predict the mass of the remaining light blue solid.Suppose you mix 100.0 g of water at 27.1 oC with 75.0 g of water at 76.1 oC. What will be the final temperature of the mixed water, in oC? Type answer:a fuel is fire in a coal in the following proximate analysis: 5%M, 60%FC, 25%VCM, 10% ash. The Calorific value is 31.33 MJ/Kg. Calculate the %VCM lost, % C lost, and %CV lost in the refuse. a.)14. 4% FC, 6%CVM, and 79.6% ash b.) 19.6% C and 80.4% ash