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The steam reforming of methane is widely used in industry to make hydrogen, as given in the following reaction:CH4(g) + H2O(g) ? CO(g) + 3H2(g) a) Calculate the (approximate) enthalpy change, ?H, from the relevant bond dissociation energies. b) What would be the predicted sign (i.e., positive, negative, or zero) of ?S? Describe why. c) At what temperatures is the above reaction expected to be spontaneous? Describe why.
The average person generates about 2500 Kcal of heat a day. How many kilowatt-hours of energy is this? If walking briskly dissipates energy at 500 W, what fraction of the day's energy does walking one hour represent.
Next, you add 1.00 mL of 1.35 × 10-6 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine present in the form LH .MOPS Buffer Ka = 6.3 × 10-8. Lidocaine Kb = 8.7 × 10-7, calculate the fraction of lidocaine prese..
Draw all of the eclipsed and staggered conformations for the c3-c4 bond in hexane starting with the conformation that has the lowest energy.
MgNH4PO4 • 6H2O loses H2O stepwise as it is heated. Between 40º and 60º C the monohydrate (MgNH4PO4 • H2O) is formed and above 100º C the anhydrous material (MgNH4PO4) is formed. What are the phosphorus percentages of the monohydrate and anhydrous..
In hydrogen bonding does the Hydrogen have to be connected to an O, N or F in its own molecule and be bonded to a O, F or N with another hydrogen
Calculate the molarity of of each ion present in the solution. Please walk me through the steps I'm trying to help my daughter with her chem. homework and I don't know any chem.
What mass of sucrose C 12 H 22 O 11 must be mixed with 543 grams of H 2 O to make a solution with an osmotic pressure =8.00 atm at the temperature of 12 degree celsius?
Determine the rate constant also explain how many mg will remain after thirty nine days - A radiation biologist studies the decomposition rate of a certain substance and obtains the given data as
Label the stronger cojugate base [A] H3PO4; phosphoric acid; Ka= 7.5 X 10^-3 or HCOOH; Formaric acid; Ka= 1.8 x 10^-4 [B] CHOOH; Formaric acid; Ka=1.8 x 10^-4; or C6H5COOH; benzoic Acid; Ka= 6.5 x 10^-5
Compute the amount of heat liberated when 6.07 g of n-octane is burned completely with excess oxygen to form carbon dioxide and liquid water.
a 175.0g sample of a compound contains 56.15g C, 9.43g H, 74.81g O, 13.11g N, and 21.49g Na. What is the compound's empirical formula?
Calculate the lattice energy for the hypothetical ionic compound M2X from the information given below.
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