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A sound wave has a frequency of 2000 Hz. What is the distance between crests or compressions of the wave? (Take the speed of sound to be 344 m/s.) Compute the wavelength of an X-ray with a frequency of 1018 Hz.
Look up the chemical compound that is methiocarb and describe briefly its chemistry and its pharmacology and what effects does Methiocarb have on the mammalian body? What other signs/symptoms would Jimmy display? Can this chemical cause death? Why?
Consider the decomposition of calcium carbonate. Assume that ?H° = 177.8 kJ/mol and ?S° = 160.5 J/K·mol for the temperature range. CaCO3(s) -> CaO(s) + CO2(g)
bathophenanthroline is a compound that forms a red complex with ironii. the molar absorptivity for the complex is 22350
A student heated 1.0L of ethanol (density 0.789 g/L) with 1.0 mL ethanoic acid (density 1.049 g/mL) with a sulfiric acid catalyst and noticed a vinegar-like smell to the product as well as a fruity medicinal smell.
What experimental error would cause a mistaken increase of copper into the cycle? What is done in the Experimental Procedure to avoid this "positive" error? Explain a. Explain what factors may contribute to a greater than 100% recover of copper in th..
If 250mL of methane, CH4 effuses through a small hole in 48 s, the time necessary for the same volume of helium to pass through the hole will be?
It has a diameter of 13.46 cm. On the other hand, spent uranium (from processing which removes the commercially important rare isotope) has a specific gravity of 19.05. How many pounds would a uranium cannonball of the same dimensions as the iron ..
Benzyl bromide is converted into benzaldehyde by heating in dimethyl sulfoxide. Propose a structure for the intermediate, and show the mechanisms of the two steps in thereaction.
how many grams of ethylene glycol must be added to 700g of water to yield a solution that will freeze at -8.5 degrees Celsius?
The normal boiling point of liquid bromine is 58.8oC, and its molar enthalpy of vaporization is Delta Hvap = 29.6 kJ/mol. (a) When Br2(l) boils at its normal boiling point, does its entropy increase or decrease?
Utilizing the Bohr model for hydrogen-like atoms, make first-order approximates of the energies expected for the Kα, Kβ, Lα and Lβ x-ray fluorescence transitions as well as the ionization energy of an electron in the K shell. Report the energies i..
Explain what would happen if Manganese dioxide was mixed with Potassium iodide and 9M sulfuric acid
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