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The absorbance of four standard Fe2+ solutions were measured to get a calibration curve that gave the subsequent best fit line
y = 0.2432x + 0.00843
Explain what is the concentration of Fe2+ (ug/mL) in a solution whose absorbance is 0.638.
A certain elixir is 92 proof. A proof is twice the volume percentage of alcohol in a blend. Ethanol's structural formula is CH3CH2OH with a molar mass of 46 grams/mole. The density is .79 g/ml. How many liters of elixir must one have in order to h..
Using information from the table of Standard Thermodynamic Data in the textbook, calculate the equilibrium constant, Keq, for the reaction given below at 298 K. C2H6O (g) ? C2H4 (g) + H2O (g) Keq =
Using appropriate equations, explain why combustion of fuels containing sulfur leads to acid rain.
Sodium carbonate (Na2CO3rm Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 3.02×103kgkg of sulfuric acid solution
What are the concentrations of H2SO4 and H2SO3 in a 25ml solution titrated with .1M NaOH. The first endpoint is reached after 37.89ml of NaOH are added (pH=7) and the second endpoint is reached after 43.57ml of NaOH are added (pH=9.8).
It then gives off a photon having a wavelength of 4.10 × 102 nm. What is the final state of the hydrogen atom? Values for physical constants can be found here.
How many moles of hydrogen gas would be needed to react with excess carbon dioxide
Consider a separation train consisting of two distillation columns which are designed to separate a three componentmixture of benzene, toluene, and xylene into three streams, each rich in one of the species asshown below.
During steel formation, why do the following reactions cause the temperature in the converter to increase?
The molality of the solution is determined to be .0480m. What is the molar mass of the substance?
An irregulary shaped metal object has a mss of 28.73 g. It is lowered int a 100-mL graduated cylinder that contains 35.2 cm3 water. The water level rises to 44.8 cm3. What is the density of the metal
a compound vortex in a large tank of water comprises a forced vortex core surrounded by a free vortex. determine the
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