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A buffer that contains 1.10 M base, B, and 0.700 M of its conjugate acid, BH+, has a pH of 9.250. What is the pH after 0.0050 mol of HCl is added to 0.500 L of the solution?
The first ionization energy of bismuth is Ei1 = +703 kJ / mol. What is the longest possible wavelength of light that could ionize an atom of bismuth?
An acetic acid/acetate buffer system would be the best choice for experiments at pH = 5.00. What mass of sodium acetate trihydrate (NaCH3CO2•3H2O)
after finding the kinetic trace by bleaching food dye and finding the concentration and then graphing.
Imagine a silica microsphere half of which is coated with a thin gold coating and having a trimethylammoniumpropanethiol molecule anchored to the gold.
what is the volume of a block with the dimensions 95.6cm in length, 43.7cm wide, and 10.2cm in height?
Calculate the molar concentration of OH - ions in an 1.37 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced.
Calculate concentration of NaClO solution from that equation and calculate How many grams of this nuclide in a sample of 4.00 g will remain after 112 years?
a 93 L sample of dry air cools from 145 degrees C to -22 degrees C while the pressure is maintained at 2.85 atm. what is the final pressure?
diamond crystallizes in a cubis cell with a+0.35670 nm and Z=8. Using 3.51 g/cm cubed as the density of diamond calculate te value of avagadro's number.
Calculate the energy change for the reaction K(g) + I(g) → K+(g) + I- (g) given the following ionization energy (IE) and electron affinity (EA) values. IE K = 419 kJ/mol, IE I = 1010 kJ/mol; EA K = 48 kJ/mol. EA I= 295 kJ/mol
Estimate the pH at the equivalence point of an HOAc solution if 25.5 mL of this solution required 37.5 mL of 0.175 M NaOH to reach the equivalence point (Ka = 1.8 x 10-5).
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