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Calculate the conditional formation constant Kf for the formation of an EDTA complex with copper (II) at a pH of 5.00, if log Kf= 18.80
celcius of a solution prepared by dissolving 0.0550 mole of a sodium acetate in 1.00 L of 0.250 M acetic acid.
What is the freezing point of a solution made by mixing 1.40 mol sodium sulfate, Na2(SO4), 1750 g H2O? (Kfp=1.86 C/m)
calculate the number of grams of acetic acid per 10ml of the vinegar. Since vinegar has a density of about 1.00 gram/ml, 100 ml eighs about 100 g.
If the cell potential is 0.061 V at 25?, what is the pH of the electrolyte at the hydrogen electrode
If the rate increases by a factor of 10 as the temperature increases from 35 °C to 70°C, what is the activation energy for the reaction?
Atrazine is an herbicide widely used for corn and is a common groundwater pollutant in the corn-producing regions of the United States. The log Kow for atrazine is 2.65.
Hydrogen sulfide () is a common and troublesome pollutant in industrial wastewaters. One way to remove is to treat the water with chlorine, in which case the following reaction occurs:
In proteins, the amino acid histidine (His) plays an important role in many biological reactions. The pKa for the protonation of His to form HisH
A system had 150 kJ of work done on it and its internal energy increased by 60 kJ. How much energy did the system gain or lose as heat?
Calculate the resulting CO2 concentration in the atmosphere 30 years from now assuming that we will use only coal to generate electricity. Assume efficiencies of 40% for power plants.
how many moles of NH4Cl are necessary to prevent the precipitation of magnesium hydroxide (neglect change in volume due to addition of NH4Cl)? The solubility product for Mg(OH)2 is 1.5× 10-11, and the Kb for ammonia is 1.8 × 10-5.
What volume of ammonia at 25 °C and 1.5 atm pressure is needed to produce 500 g of urea?
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