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A cylindrical steel pipe is used to transport hydrogen gas in a certain process. The density of the hydrogen in the pipe is 5kg/m3 and the density in the environment is effectively zero. The pipe has a diameter of 5cm and a thickness of 3mm . If the diffusion coefficient of hydrogen in the steel is D1 = 1.24×10?4cm2/s when the temperature is 800K , what is the leak rate of hydrogen through one meter of pipe?
Given the values of ΔH ° rxn , ΔS ° rxn , and T below, determine ΔS univ. ΔH ° rxn = 80kJ , ΔS rxn = 143J/K , T= 299K Express your answer using two significant figures.
when 0.08 moles ammonium chloride are dissolved in enough water to make 677 milliliters of solution, what is the molarity of chloride ions?
Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample A has a larger volume than sample B. Compare the pressures. Compare the rms speeds. Compare the average kinetic energies.
What is the molarity of the new solution compared to the molarity of the initial solution?
Consider the titration of a 25.0 mL sample of .125M RbOH with .105M HCl. Find the initial pH.
Which of the following is both a decomposition reaction and a reduction-oxidation reaction? a. H2CO3(aq) --> Co2(g) + H2O(l) b. Zn(s) + SuNO3(aq) --> Cu(s) + ZnNO3 (aq) c. Ca(OH)2(aq) + 2HCl(aq) --> CaCl2(aq) + 2H2O(l)
the osmotic pressure of the solution at 25C is found to be 0.614 mbar. Calculate the molecular mass of immunoglobulin G.
If 5 moles of propane and 10 moles of oxygen are sealed in a container and burned, which reactant will be the limiting reactant, and how many moles of carbon dioxide will be produced?
Using the tools you have at hand (a melting point apparatus and TLC setup), what other data could you collect to test your hypothesis from part a? Give two possibilities.
The equilibrium concentration of I2 is 0.0900M. What is the equilibrium constant, Kc , for the reaction at this temperature?
The carboxylate groups in sugammadex play an important binding role in locking rocuronium into the central cavity of the cyclodextrin, but they also have an important role in allowing the drug access to the cavity.
If the formula for magnesium fluoride is MgF 2 and the formula for potassium chlorate is KClO 3 , then what is the formula for magnesium chlorate?
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