A fuel is fired with a coal with the following proximate analysis: 5% M, 60% FC, 25% VCM, 10% ash. The CV=31.33 MJ/kg. Calculate the % VCM lost, %C lost, % CV lost in the refuse if it analyzes 19.6% C, 80.4% ash.
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- About what thermometer reading (in degrees Celsius) do you expect as you approach the end of the fractional distillation of a 1:1 ethyl acetate-toluene mixture? 100 110 125 82A quantity of gas in a piston cylinder had a volume of 0.539 m^3 and a pressure of 200 Pa. the piston compresses the gas to 0.222 m^3 in an isothermal (constant-temperature) process. What is the final pressure of the gas?Combustion of a fuel sample in a bomb calorimeter increases the temperature of the entire system by 5.10 °C if the calorimeter contains 1700 g of water, but only by 4.00 °C if the calorimeter contains 2200 g of water. What is the heat capacity of the dry bomb calorimeter assembly? Assume that the specific heat capacity of water is 4.18 J g–1 °C–1.
- If 4.00 L of ethyl alcohol at 18.0 ⁰C is exposed to a temperature of 25.0 ⁰C, what is the resulting volume? (Alcohol: β = 1100x10⁻⁶ / ⁰C) * a. 4.03 L b. 4.31 L c. 0.308 L d. 0.0308 LThe enthalpy of combustion of hard coal averages −35 kJ/g, that of gasoline, 1.28 × 105 kJ/gal. How many kilograms of hard coal provide the same amount of heat as is available from 1.0 gallon of gasoline? Assume that thedensity of gasoline is 0.692 g/mL (the same as the density of isooctane).A clinical technician finds that the activity of a sodium-24 sample is 1088 cpm. What will be the activity of the sample 90. h later if the half-life of sodium-24 is 15 h?
- Determine and report the pressure of collected hydrogen gas in atmospheres. Report this result to one more digit than allowed by applying the rules of significant figures. (1 atm = 760 mm Hg, an exact conversion factor.) Determine the moles of hydrogen collected by substituting the appropriate quantities into the ideal gas equation and solving. Report this result to one more digit than allowed by applying the rules of significant figures. Notes: the gas temperature is the same as the listed temperature; R = 0.082057 L-atm/mol-K. Be mindful of units. Determine the experimental atomic mass of Cu. Round this result to the correct number of significant figures. Determine the percent relative error (= ????????????−?h????????? ? 100). The molar mass of Cu is 63.546 g/mol. Mass of copper before electrolysis 6.008 g Mass of copper after electrolysis 5.860 g Volume of H2 collected 58.9 mL Pressure of H2, PH2 720.8 mm Hg Temperature 24.0 oCA 1.23 g sample of acetic acid (HC2H3O2) was burned in excess oxygen in a bomb calorimeter. The calorimeter, which alone had a heat capacity of 2.67 kJ/°C, CONTAINED 745 G OF WATER. The temperature of the calorimeter and its contents increased from 23.77 °C to 27.95 °C. What is ΔH (in kJ) for the combustion of 1.00 mol of acetic acid is 60 g/mol.Two air flows are combined to a single flow. One flow is 1 m3/s at 20oC and the other is 2 m3/s at 200oC, both at 100 kPa. They mix without any heat transfer to produce an exit flow at 100 kPa. Neglect kinetic energies and find the exit temperature and volume flow rate.
- The amount of heat in kJ required to convert 0.7 gal of liquid water to steam equal… ?The standard heat of combustion of liquid methyl cyclopentane, C6H12(l),C6H12(l), was measured to be −3937.7 kJ/mol.−3937.7 kJ/mol. What is Δ?̂ ∘f C6H12(l),ΔH^f C6H12(l)∘, the standard heat of formation of liquid methyl cyclopentane?Heliox is a helium‑oxygen mixture that may be used in scuba tanks for divers working at great depths. It is also used medically as a breathing treatment. A 5.25 L tank holds helium gas at a pressure of 1734 psi. A second 5.25 L tank holds oxygen at a pressure of 461.0 psi. The two gases are mixed in a 5.25 L tank. If the temperature remains the same throughout the process, what is the pressure of the gas mixture in the tank? Assume ideal gas behavior.