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The combustion of an unknown amount of propane (x moles of C3H8) in an industrial oven produces the following dry exhaust gas analysis on a volume basis: 5.52% CO2, 12.59% O2, and 81.89% N2. Determine
a. The actual molar and mass air/fuel ratios.
b. The percent of theoretical air used.
c. The volume percentage of water vapor in the exhaust gas before it was dried for this analysis.
A chemist prepares a solution of potassium permanganate by measuring out 33.g of potassium permanganate into a 450ml volumetric flask and filling the flask to the mark with water. Calculate the molarity
nitrogen dioxide no2 cannot be obtained in a pure form in the gas phase because it exists as a mixture of no2 and n2o4.
The molality of the solution is determined to be .0480m. What is the molar mass of the substance?
Determine the volume of 0.375 mol of C4H10 gas under the same temperature and pressure conditions?
Sodium cyclamate, NaC6H12NSO3, was a popular nonsugar sweetener until it was banned by the Food and Drug Administration. Its sweetness is about 30 times that of sugar (or sucrose, C12H22O11).
The standard enthalpy of formation of K+(aq) is -252.14 kJ/mol. How much heat is evolved when 0.1047 g of K(s) reacts with excess HCl?
An important space shuttle mission has been interrupted with an emergency that will delay the return of the crew to earth indefinitely. You are an emergency team that has been assigned the task of determining how long the crew can survive before c..
What mass of natural gas (CH4) must burn to emit 470. kJ of heat? CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g).
The vapor pressure of water at 25deg C is 23.8 torr. Determine the mass of glucose (MolarMass=180g/mol) needed to add 500g of water to change the vapor pressure to 23.3 torr.
Calculate the molar Gibbs free energy change for the phosporylation of glucose by ATP to produce glucose-6-phosphate. Assuming the reaction happens at 310K and at pH 7. The concentration of ATP, ADP, G6P, and Glu are 1850 µM, 138 µM, 83 µM, and 50..
Utilize the Born-Haber cycle as well as data to calculate the lattice energy of. You may require the subsequent data: electron affinity of oxygen, ionization energy of calcium,
compute the change in temperature when 1.1 g of sodium chloride is dissolved in 300.0 ml of water initially at 26 c.
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