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A 20.0mL sample of 0.20 M sodium acetate is titrated with 0.11 M HCL(aq). Explain what is the pH after the addition of 50.0mL HCL(aq)? (Kb of CH3CO2- = 5.6 ´10-10)
What mass of aluminum metal can be produced per hour in the electrolysis of a molten aluminum salt by a current of 30 A
Why are the Kr---Kr and intermolecular Br---Br distances in the solid form of the two elements practically identical. How would you expect the Br---Br distances in solid CBr4 to be related to the above distances
If the solubility of NaBr at 25 degree C is 14.3 g/100 g H2O, what mass os NaBr can be dissolved in 300 grams of water
Would MS help you with either of these problems? If yes, explain how. a) differentiating 1-pentyne from 2-pentyne
(Assume that each G protein activates a single unique adenylyl cyclase.) Calculate the number of moles of cAMP that are produced per second. Enter your answer to at least two significant figures
SnI4 is soluble in acetone. What does this tell you about the ionic nature of this compound? Is the charge on the tin is actually +4? What was the effect of adding KI to the acetone solution?
When gaseous nitrogen,hydrogen & ammonia are mixedin a closed vessel at room temperature no apparent change in the concetrations of regardless of the original amount of gases.
cadmium telluride cdte takes the zinc blende structure with aunit cell edge length of 6.49 angstroms. there are 4
For MgO, which has the NaCl structure, the unit cell edge is 4.21 Angstroms. Use the approach of Pauling to evaluate the radii of Mg^2+ and O^2-
suppose that 500 g of water vapor condense to make a cloud about the size of an average room. if we assume that the
Draw a molecular orbital for 1,3,5,7-octatetraene. Make sure to include labels, relative energy, bonding/antibonding character, # of electrons and HOMO and LUMO.
The rate of a chemical reaction is found to double when the temperature is raised from 298K to 308K. Determine the activation energy.
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