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If the work function of a metal is 3.51 eV, what is the maximum wavelength of light that can be used to observe the photoelectric effect? answer in nm.
Compare and contrast continuous spectrum and line spectrum as they relate to the elements. Describe how spectral lines can be used to identify elements.
what is the easiest way to identify the structure of a molecule from a H-NMR spectra?
The addition of 6 g of salt to a sample of pure water causes its freezing point to be reduced from 0°C to -1.5°C. After an additional amount of salt is dissolved in the solution
For the 3 wood preservatives noted, would acidic vs. alkaline soil or water conditions cause more (or less) leaching or dissolution of these compounds. How do these compounds actually leach out of wood into the environment?
The mixture is 20% benzene by volume. A densitometer gives the density of the mixed stream to be 1.1 g/mL. What are the mass fractions of all three species?
Using the volumes of sodium EDTA solution you just entered and the corresponding calcium carbonate masses entered earlier, calculate the molarity of the sodium EDTA solution for each trial.
What is the overall order of the reaction? b.What is the order with respect to X?To Y? c.In a reaction
Iit decomposes into Cl2 gas and SO2 gas. If 13.5g of SO2Cl2 is initially placed in a 2.20L container at 435K, calculate the concentration of SO2Cl2 at equilibrium. Kc=2.50 * 10^-3
The solubility of CO2 in water at 25°C and 1 atm is 0.034 mol/L. What is its solubility under atmospheric conditions? (The partial pressure of CO2 in air is 0.0003 atm.) Assume that CO2 obeys Henry's law.
An aqueous solution containing 35.0% by mass of an unknown covalent compund in water was found to have a freezing point of -3.5 deg C. Calculate the molar mass of the unknown compund.
Scientists can use mutants to study metabolic pathways. These organisms have a mutation in a gene encoding a metabolic pathway enzyme that results in the inactivation of that enzyme
Determine what is the mass percent yield from 2.57 grams of Sb in excess Sulphur , if 1.56 g of Sb 2 S 3 is obtained?
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