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The emf of a cell made of a Zn anode and hydrogen cathode immersed in 0.5M ZnCl2 is +0.590V. What is the pH of the solution?
Use the Nernst Equation?
If the protein has a molecular weight of 15,000, express its initial concentration in umoles/ml and in umoles/ul. If we want 2 umoles of the protein for a reaction, how much of the original solution do we need
a 493 ml sample of solution contains 33.2 g of cacl2. calculate the molar concentration of cl in this
If the pH of a solution is more than the pKa of an acid dissolved in it, is more of the acid in the protonated form or deprotonaqted form
Calculate the pH at the equivalence point in titrating 0.047 M solutions of each of the following with 0.011 M NaOH. (a) periodic acid (HIO4) pH = (b) benzoic acid (HC7H5O2), Ka = 6.3e-05 pH = (c) carbonic acid (H2CO3), Ka = 4.3e-07 pH =
for the reaction2ch4g lt-- --gt c2h2g 3h2g0.115 mole of ch4 was placed in a 1.00 l container. at equilibrium it was
soultion of silver nitrate is mixed with 400.0 ml of 0.200 M calcium chloride. What is the concentration of cl- in solution after the reaction is complete
Calculate the number of moles of gas in a 3.24 L basketball inflated to a total pressure of 24.3 psi (pounds per square inch) at room temperature (25 degrees Celsius).
Draw structural formula for allyl alcohol. Use stereo bonds ONLY if in your example you are asked to draw a particular stereochemistry.
heat of solution of lithium carbonate is -3.06 kJ/mol solute in 200 moles H2O. What effect would you expect increased temperature to have on the concentration of Li2CO3? Explain
The molar heat capacity of ethane is represented in the temperature range 298 k to 400 k by the empirical expression C(p,m)/(J K-1 Mol-1) = 14.73 + 0.1272 (T/K). Calculate the standard enthalpy of formation of ethane at 350 K from its value at 298..
What mass of natural gas (CH4) must burn to emit 470. kJ of heat? CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g).
What would be the atomic numbers of the first three noble gases in that universe? What would be the atomic numbers of the first three halogens?
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