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The absorbance of a solution of NiCL2 Of unknown concentration is found to be 0.388. What is the concentration of this solution?
at 25 degrees celsius the concentration of n2 in h2o was determined to be 7.2 x 10-6m. compute the partial pressure of
A 40-year-old manager, at a prominent legal firm in L.A., experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps. He eventually decides to get himself examined.
What is the mass of 8.00 1022 molecules of tetraphosphorus decaoxide? (b) How many P atoms are present in this sample?
A large flask is evacuated and weighed, filled with argon gas, and then reweighed. When reweighed, the flask is found to have gained 3.219 g. It is again evacuated and then filled with a gas of unknown molar mass
Calculate the pH of Benzoic acid if 0.0458 M is dissolved in water ( Ka = 6.40 x 10^-5) C6H5CO2H + H2O = (H3O+) + C6H5CO2 ^-1
Hydration of alkynes (via oxymercuration) gives good yields of single compounds only with symmetrical or terminal alkynes. Draw the major organic product(s) formed when hex-2-yne undergoes hydration in the presence of HgSO4 and H2SO4.
If the temperature in the laboratory is 22.3oC and the atmospheric pressure is 0.931 atm, what volume would be occupied by the carbon dioxide produced in this reaction (in cm3)?
Give the chemical equation for the reaction that occurs in (B) to reach equilibrium.
suppose a similar experiment had been done using 1.0 m h3po4 solution as the acid. what would be the expected
sodium benzoate c6h5coona is used as a food preservative. calculate the ph of a 0.050 m solution of this salt. ka for
Calculate the concentration of Iron(II) ions in a solution that contains 0.10M Fe(NO3)2 and 1.00M NaCN.
It has only one active site! Describe how four bases with different geometries can fit into a single active site and how does the enzyme differentiate between the four bases
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