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The emf of a cell made of 2 hydrogen electrodes is 0.0121 V. What is the pressure of the gas at the cathode if the pressure at the anode is 2.5 bar?
Describe the bonding in a) KSCN, b) Fe(NO3)3, c) and the product of the reaction between a) and b). 2. Write net ionic equations for all positive reactions that take place.
The solubility of silver chromate, which has a Ksp equal to 9.0e-12 at 25 degrees celsius, is determined in water and in two different solutions. Predict the relative solubility of silver chromate in the three solutions
Water (2290 ) is heated until it just begins to boil. If the water absorbs 5.43×105 of heat in the process, what was the initial temperature of the water?
In a 0.400 mol/kg aqueous solution of sucrose, the molarity of sucrose is 0.282 mol/dm3 and the density of water is 0.998 g/cm3 at 20oC and 1 atm. Estimate the osmotic pressure of this solution.
Draw the structure of (1S,3R,4R)-1-tert-butyl-3,4-dimethylcyclohexane in its lowest energy chair-conformation.
Answer the following questions: a) can Al3+(aq) oxidize tin (Sn) under standard-state conditions?; b) would it be OK to store an aqueous AlCl3 solution in a tin container?; c) can Sn2+(aq) oxidize aluminum (Al) under standard state conditions?; d)..
The skeletal structure of one molecule is included to indicate the proper format; modify the X\'s on the given structure to create the first stereoisomer.
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 82% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9*10-12.]
Consider the subsequent reaction, equilibrium concentrations as well as equilibrium constant at a particular temperature. Find out the equilibrium concentration of CO2 (g).
Explain what are the mole fraction of NaCl and water (solvent) in a 2.25M NaCl water solution. Density of this solution is 1.086g/ml.
Calculate the of a solution prepared by mixing equal volumes of 0.21 methylamine (CH3NH2, Kb = 3.7 x 10^-4 ) and 0.61 M CH3NH3Cl.
If a contemporary wooden chair were somehow preserved to for the next 3,900 years, what C-14 dacay rate should be expected from the wood used to make the chair? (t1/2 = 5730)
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