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An equilibrium mixture of the above system was found to contain the following concentrations: HCl(g) = 0.35 mol/L, O2(g) = 0.078 mol/L and H2O(g) =1.2 mol/L. The equilibrium concentration of Cl2(g) is calculated to be _______ mol/L
Consider the following reaction at constant P. Use the information here to determine the value of Îsurr at 355 K. Predict whether or not this reaction will be spontaneous at this temperature. 2 NO(g) + O2(g) â 2 NO2(g) ÎH = -114 kJ
What does the term partial pressure mean - Write an expression for the equilibrium constant KP for this in terms of partial pressures
mixed 14.5 mL of a .500 M sodium flouride solution with 15.6 mL of a .750 M hydroflouric acid solution the measured Ph was 3.24. Calculate the pKa.
How much heat is released when 6.38 grams of Ag(s) reacts by the equation shown below at standard state conditions. 4Ag(s) + 2H2S(g) +O2(g) --> 2Ag2S(s) + 2H20(l)
Draw a Lewis structure for CN- where the bonding occurs along the x-axis. Be sure to include all lone pairs and formal charges if appropriate.
A 45.3 g sample of Al at 95.5 oC is added to 182.7 g of water that is initially at 20.5 oC. The specific heat of Al and water are 0.90 J/(goC) and 4.184 J/(goC), respectively. Calculate the equilibrium temperature.
describe how to convert between the mass and the number of moles of a substance.show how you convert 4.5 moles h2o to
Alpha helices are a kind of secondary structure in proteins. Explain what is the length of a 31-kDa single-stranded -helical protein segment? Presume a mean residue mass of 110 Da.
Which one of these equations describes a redox reaction. 2Al+3H2SO4(aq)-->Al2(SO4)3(aq)+3H2(g), 2KBr(aq)+Pb(NO3)2(aq)-->2KNO3(aq)+PbBr2(s), CaBr2(aq)+H2SO4(aq)-->CaSO4(s)+2HBr(g), H+(aq)+OH-(aq)-->H2O(1), CO.-(aq)+HSO4-(aq)-->HCO3-(aq)+SO42-(aq)
Write the net ionic equation for this reaction. (Include states-of-matter under the given conditions in your answer. Use the lowest possible whole number coefficients.)
A 275 mL sample of vapor in equilibrium with 1-propylamine at 25.0C is removed and dissolved in 0.500L of H2O.For 1-propylamine, pKb= 3.43 and the vapor pressure = 316 torr.
Explain what is the standard emf of galvanic cell made of a Ni electrode in a 1.0 M Ni(NO3)2 solution as well as a Cr electrode in a 1.0 M Cr(NO3)3 solution at 25 degrees Celsius
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