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How do the brilliant colors( purple) of these transition metal complexes (i.e. Cobalt hexhydrate) relates back to the UV-Vis spectrum recorded?
A certain reaction between a weak acid (boric acid) and a strong base (sodium hydroxide) has an equilibrium point at a pH of approximately 11. From what you know about indicators, which indicator would be best to use to tell when neutralization ha..
Calculate the pH for the soluton after addition of solid sodium formate to cause the formate ion (CHOO-) to increase to 0.2 M
C3H8O3 (density=1.26 g cm-3) is added to a kilogram of water. What is the mole fraction C3H8O3 in the solution?
This leaves the aspartic acid amine group and the side chain carboxylic acid functional group of aspartic acid. Therefore aspartame will have an isoelectric point at a pH between the pKa values of these functional groups
When 0.170 g of the hydrate CaCl2•xH2O is heated, 0.128 grams of anhydrous CaCl2 remains. What is the value of x in the formula for the hydrate?
what is the theoretical yield of aluminum oxide if 2.40 mol of aluminum metal is exposed to 2.10 mol of oxygen
a lake in central texas contains 5.0 billiion liters of water. the pH is normally 6.4, but it is tested at 5.6. how much CaCO3 should be added to bring the pH to a more reasonable 6.0?
what is the mass in grams of 3.17x10^20 atoms of the element?
A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke. Draw the structure of this hydrocarbon. Can you suggest other sources where this material might b..
what is the hydrogen ion concetration of a solution that has a pH of 4.7
Calculate q if the temperature of a 1.00 kg water bath in the surroundings increases by 1.25 Celsius degree.
What is the pH at the half-stoichiometric point (half-way to the endpoint) for the titration of 0.22 M HNO2(aq) with 0.10 M KOH(aq)?
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