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Potassium hydroxide is used to precipitate each of the cations from their respective solution. Determine the minimum concentration of KOH required for precipitation to begin in each case.
A)1.3*10^-2 M CaCl2
B) 2.8*10^-3M Fe(NO3)2
C) 1.8*10^-3M MgBr2
How long would it take the same number of moles of Ar(g) to effuse through the same membrane?
Consider the titration of 41.2ml of 0.270M HF with 0.180M NaOH. Calculate the ph at each of the following points. how many milliliters of base are required to reach the equivalence point?
compound of carbon and oxygen contains 3.00g of carbon and 8.00g of oxygen, what is the mass percent of carbon in the compound?
How many moles of potassium carbonate will be produced if 476 g of potassium hydrogen carbonate are heated
Inorganic phosphorous is spectrophotochemically measured in blood serum by formation of a reduced heteropoly acid (heteropoly blue) and comparison of its absorbance with a standard treated by the same procedure.
from the IR, 1H NMR spectrum and uv values decide what functional groups are present in the compound and deduce any other structural information you can, such as existance of conjugation in the carbonyl compound.
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32 P, how many grams will remain after 98.0 days?
A bottle of vinegar is labeled 5.0% acetic acid. If the bottle contains 240.0ml of acetic acid, how many grams of acetic acid are contained in the bottle?
The analysis of a hydrocarbon revealed that it was 85.6281% C and 14.3719% H by mass. When 2.55 g of the gas was stored in a 2.5 L flask at 127.276 C.
Draw a reaction coordinate diagram for a one-step, exothermic reaction in which the the thermodynamic product is not the kinetic product (that is, the most stable product is the slowest to form).
Nitrosyl chloride (NOCl) decomposes at elevated temperatures according to the equation 2NOCl(g) ->2NO(g) + Cl2(g). Calculate Kp for this reaction at 680°C. (For this reaction ΔH° = 81.2 kJ/mol, ΔS° = 128 J/K·mol)
Explain why does ATP synthesis occur in the presence of Rotenone ( an inhibitor of one the reactions in the electron transport system.) if succinate is combined but not ATP synthesis doesn't occur if L-malate is added?
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