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A gaseous fuel mixture stored at 747 mmHg and 298 K contains merely methane and propane. While 11.3 L of this fuel mixture is burned, it produces 766 Kj of heat. Explain what is the mole fraction of methane in the mixture? Presume that the water produced by the combustion is in the gaseous state.
All numerical answers must be reported to the correct number of significant figures. In a routine laboratory analysis, a technician prepare a solution containing 0.126 g of KMnO4 in a 0.250 L volumetric flask. What is the molar concentration (mola..
The [OH-] of a solution can be determined from the pOH using the equation: [OH-] = 10 ^ -pOH where [OH-] = hydroxide ion concentration. If [OH-] = 6.0*10^-3 M then pOH=?
What is the total quantity of heat required to do this? The melting point of Pb is 327.4 degrees celsius; its heat of fusion is 4.774 kJ mol-1; its average heat capacity in the temperature range from 51 to 327.4 deg. celsius is 0.134 J g-1K-1.
Given N2 (g) + 3 H2 (g) ? 2 NH3 (g), which scenario will allow you to eventually reach an equilibrium mixture involving these chemicals? Place only H2 into a sealed vessel. Place only N2 into a sealed vessel. Place only NH3 into a sealed vessel.
a liquid unknown was found to be inslouble in water & soluble in cyclohexane & alcohol; the unknown was found to have a boiling point of 58 degress celsius at 670mm Hg. What is the substance? What could you do to confirm your answer?
Find the Fourier transform of the function exp(-πx2/ σ2). Explain how the width and height of the bands are inversely related in the two domains. Why should this be so
The amount of carbon-14 in ancient artifacts and fossils is often used to establish their age. Determine the number of protons and neutrons in a carbon-14 isotope and write its symbol in the form
A 6.11g sample of a Cu-Zn alloy reacts with HCl acid to produce hydrogen gas. If the hydrogen gas has a volume of 1.26L at 22 degreesC and 728 mmHg, what is the percent of Zn in the alloy
The mass of a golf ball is 45.9 g. If it leaves the tee with a speed of 61.0 m/s, what is its corresponding wavelength?
NO (g) + O3 (g)-> NO2 (g) + O2 (g) For the reaction given, the frequency factor A is 8.7 x 1012 s-1 and the activation energy is 63 kJ/mol. What is the rate constant for the reaction at 75°C.
A gravimetric method for Al was found to give results that are constantly low by 0.70 mg Al. Calculate the parts per thousand error when 750 mg sample containing approximately 12% Al is analyzed by this method.
Assuming the surface water receiving the waste stream is somewhat dynamic, briefly summarize the zones or phases of transformation that could result during natural treatment and recovery (by sure to discuss the dynamics of oxygen depletion and rep..
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