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A gaseous fuel mixture stored at 751mmHg and 298K contains only methane (CH4) and propane (C3H8) . When 12.3L of this fuel mixture is burned, it produces 772kJ of heat. What is the mole fraction of methane in the mixture? (Assume that the water produced by the combustion is in the gaseous state.)
3NaHCO3 + H3C6H5O7= 3CO2 + 3H2O + Na3C6H5O7 1g of sodium bicarbonate and 1g citric acid are allowed to react. Find the limiting reagent.
The solution was cooled in an ice-water bath for 10 minutes and pure crystals were obtained. The crystals were filtered on a Hirsch funnel and rinsed with about 0.5 mL of ice-cold ethanol. After drying, the weight of the crystals was found to be 5..
If 2.44 moles of Helium gas has a pressure of 2.4 atm at 343 K, what volume must the gas occupy.
silica gel columns having smaller particle size procedure more effective chromatographic separations
what is the theoretical yield of zinc iodide, if a 2.0-g sample of zinc was used with 6.5 grams of iodine
What is the best oxidizing agent of these four? Could provide an explanation
Two types of electrochemical cells which are based on thermodynamic principles can be described. Which of the following statements about these cells is correct
What minimum mass of succimer in milligrams is needed to bind all of the lead in a patient's bloodstream. Assume that patient blood lead levels are 0.530 mg/L , that total blood volume is 5.0 L , and that 1 mol of succimer binds 1 mol of lead.
calculate the work required to expand the cell surface. Assume the cell is surrounded by water and that T=310K.
Calculate the frequency of each of the following wave lengths of electromagnetic radiation. Part A: 488.0 \rm nm (wavelength of argon laser) Part B: 503 {\rm nm} (wavelength of maximum solar radiation) Part C: 337.1 \rm nm (wavelength of nitrogen ..
The density of titanium metal is 4.51 g/cm^3 at 25 degrees C. What mass of titanium displaces 64.0 mL of water at 25 degrees C?
30.0 mL of pure water at 280. K is mixed with 50.0 mL of pure water at 348 K. What is the final temperature of the mixture? Ignore significant figures for this problem.
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