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Explain what is the pH at the equivalence point in the titration of 0.100 MHCL with 0.100 M methylamine, CH3NH2? The Kb for methylamine is 4.4x 10-4
Explain what is the equation that use?
a 1.6 g sample fo cono326h2o isused to prepare the complexconh34co3no3. assuming that all other reactants used in the
in a coffee-cup calorimeter 1.80 g of nh4no3 is mixed with 75.0 g of water at an initial temperature of 25.00degc.
Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm^3 at 27 degrees C. Calculate the atomic radius of Pd.
A layer of peat beneath the glacial sediments of the last ice age has a carbon-14/carbon-12 ratio that is 22.0% of that found in living organisms. How long ago was this ice age
What is the pH of the solution after 50.0 mL of base has been added? What is the pH of the solution at the equivalence point
phenol is a common organic compound that may be used as a disinfectant. its pka in water is 10.0 while in methanol its
An airplane weighing 25 metric tons leaves ground and flies to a height of 36,000 feet and attains a velocity of 575 miles/hour. What change in energy is involved
A set of data lists ratios r-/r+ for perfect packing in structures having coordination numbers of four, six, and eight. In practice a range of values for these ratios is observed within a series of compounds having the same structure.
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of mixture of 2.00 lb of NaCl and 12.00 lbs of ice if exactly half of the ice melts?
what is the pH of a Tris buffer (pka 8.1) prepared by adding 20 mL of 1M HCl to 100mL of a solution of 0.3M Tris
Combustion of 2.80 g of this compound produced 5.59 g of CO2 and 2.29 g of H2O. What is the empirical formula of the unknown compound?
What is the most significant intermolecular attraction in a pure sample of CH3F
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