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A student ran the following reaction in the laboratory at 226 K: 2 NOBr(g) 2 NO(g) + Br2(g) When she introduced 0.177 moles of NOBr(g) into a 1.00 Liter container, she found the equilibrium concentration of Br2(g) to be 1.76E-2 M. Calculate the equilibrium constant, Kc, she obtained for this reaction. Kc =
What is the pH of a solution made by dissolving 0.052 grams of RbOH in enough water to make 64.9 mL of solution
Provide the name and structure of an herbicide not structurally related to those in this experiment, and indicate how the herbicide works
Calculate the root mean square velocity of the CH4 molecules in a sample of CH4 gas at 281 K and at 533 K.
How many moles of Na and Cl2 are needed to make 7.3 moles of NaCl? Use the balanced equation 2Na + Cl2 --> 2NaCl
2 NH3 + CH3OH → products . How much NH3 is needed to react exactly with 21 grams of CH3OH
The rainwater is mainly composed of NaCl 1 mM and its pH is 4.6. Without using a computer, determine the concentration of Ca2+in runoff water.
Use a table of Ka or Kb values to determine whether Kc for the following reaction is less than, equal to or greater than 1 CH3CO2- + HSO4- CH3CO2H + SO42-
Elemental analysis of the solid suggested the composition C9H10O3. The solid melted at 117 °C and gave the following nmr spectra and the ir spectrum. What is this material and why and how did it come to be in both of these sources?
You have 250.0 mL of a 0.56M solution of sodium acetate. How many mL of 0.50M acetic acid should be added to make a buffer of pH 4.40?
At 373 K, Keq = 2.39 for the following reaction: SO2Cl2(g) = SO2(g) + Cl2(g) In an equilibrium mixture of the three gases, the partial pressures of SO2Cl2 and SO2 are 3.31 atm and 1.59 atm, respectively.
An oxygen molecule is adsorbed onto a small patch of the surface of a catalyst. It's known that the molecule is adsorbed on 1 of 36 possible sites for adsorption
Write the oxidation reaction for L-Ribose and α-D-Lyxose (use the Benedict' reagent as an oxidizing agent). Write the reduction rection (hydrogenation) for D-Idose and β-D-Psicoe.
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