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What is the percent-yield of H2 In the reaction below when an equimolar mixture of CH4 and CO2 with an initial total pressure of 20.0 atm reaches equilibrium at 1200. K, at which Kp = 3.548 x 106?CH4(g) + CO2(g) ? 2CO(g) + 2H2(g)
A. 63.4 %
B. 84.5 %
C. 48.9 %
D. 98.0 %
E. 76.7 %
A 10.0 ml sample of aqueous HCl requires 18.66 ml of 0.206M NaOH to reach the endpoint . What is the molar concentration of HCl ? The chemical equation of the reaction is
Which of the following would be expected to have the lowest freezing temperature?
The enthalpy of fusion of methanol is 3.16 kJ/mol. How much heat would be absorbed or released upon freezing 25.6 grams of methanol
Organic chemistry mechanism and conceptual problems involving, Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids.
The bond dissociation energy of Br2(g) is 193 kJ/mol, and the electron affinity of bromine is -325 kJ/mol. The enthalpy of vaporization of Br2 (l) is 31 kJ/mol. The lattice energy of KBr is -682 kJ/mol. Calculate the overall enthalpy change for th..
Calculate the mass of methane that must be burned to provide enough heat to convert 128.0 g of water at 36.0°C into steam at 103.0°C. (Assume that the H2O produced in the combustion reaction is steam rather than liquid water.)
Determine which monomer will have the higher degree of polymerization (DP) and by how much?
Which formula represents the greatest number of isomers?
What is the mass concentration of oxygen in the mixture? (Note that the vast majority of oxygen is bound to other atoms.) Give answer in g/L, 2 significant digits.
lungs now contain 0.15 moles of oxygen gas, and 0.60 moles of nitrogen gas. If your lungs are at 1.4 atm of total pressure, what is the partial pressure of oxygen gas inside your lungs?
The remains of an old campare are unearthed and it is found that there is only 80% as much radioactive carbon-14 in the charcoal samples from the campare as there is in modern living trees
At a certain temperature, the Kp for the decomposition of H2S is 0.726 H2S = H2+S initally only H2S is present at a pressure of 0.126 atm in a closed container.
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