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A gas turbine power plant receives a shipment of hydrocarbon fuel whose composition is uncertain by may be represented by the expression CxHy. The fuel is burned with excess air. An analysis of the product gas gives the following results on a moisture-free basis: 10.5%(v/v) CO2, 5.3% O2, and 84.2% N2.
a. Determine the molar ratio of hydrogen to carbon in the fuel (r), where r=y/x, and the percentage excess air used in the combustion.
b. What is the air-to-fuel ratio (m^3 air/kg of fuel) if the air is fed to he power plant at 30 degree Celcius and 98 kPa?
Atomic absorption spectrometry was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 5.00 ?L of a 1000.0 ?g/mL
the rate constant for the second order -reaction is 2NOBr(g)------>2NO(g)+Br2(g) is 48 L/mol*min at a certian temperture. How long will it take for 90.0% of a .0200M solution of NOBr to decompose.
A 5.00ml ampule of a 0.110 M solution of napthalene in hexane is excited with a flash of light. The napthalene emits 17.2 J of energy at an average wavelength of 349nm.
Which choice is closest to the longest wavelength that will remove an electron from the n=3 level of the hydrogen atom? (hint: what would you use for the value of nfinal when the electron is completely removed from the atom?)
Why are we being so careful to eliminate moisture from the reaction vessel, solvent, etc? What is the reaction that will occur if water is present?
a how many grams of sodium lactate should be added to 1.00l of 0.150 m lactic acid to form a buffer solution with ph
50.0 mL of a 1.70 M solution is diluted to a volume of 248 mL. A 124-mL portion of that solution is diluted using 185 mL of water. What is the final concentration
How many equivalent resonance forms can be drawn for SO2 without expanding the octet on the sulfur atom? (A) 0 (B) 1 (C) 2 (D) 3 (E) 4 17. In which of these species does the first atom in the chemical formula violate the octet rule? 18. How many e..
Calculate the energy of an electron in the hydrogen atom when n = 2 and calculate the energy of an electron in the hydrogen atom when n = 6.
If the pressure exerted by ozone, in the stratosphere is 3.0*10^-3 atm and the temperature is 253 K, how many ozone molecules are in a liter?
How many grams of N2 are required to react with 2.30 moles of Mg in the following process?
Derive the simplest algebraic form of the error propogation equation to evaluate the uncertainty in D ehere D=(m2-m1)/(V2-V1)
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