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Consider a pipe with a length of 43.5 cm. If the temperature of the air is 19.5 oC and the pipe is closed in one end and open in the other, what is the frequency of the third harmonic for the pipe? Post your answer in hertz (Hz) and with 3 significant figures.
A solution of 0.1% sodium dodycl sulfate (SDS) binds so strongly to polypetide chains that one detergent molecule is sufficient to saturate two amino acid residues.
In a thermite reaction, powdered aluminum reacts with iron (III) oxide to make aluminum oxide and molten iron What mass of aluminum oxide is produced when 2.3 grams of aluminum reacts with iron (III) oxide
A sample of concrete contains cement, gravel, crushed rocks, sand, and water. Each of these contains different metals and minerals and hence has different colors and different properties. Which term or terms could be used to describe this sample o..
A diode laser emits at a wavelength of 987 nm. All of its output energy is absorbed in a detector that measures a total energy of 0.54 J over a period of 36 sec. How many photons per second are being emitted by the laser
For a particular redox reaction NO(2)^- is oxidized to NO(3)^- and Ag^+ is reduced to Ag. Complete and balance the equation for this reaction in a basic solution
Determine the activation energy for the reaction in kJ/mol and calculate the rate constant of the reaction at 300 K in M-1s-1
Calculate the concentrations of all species in a 0.370 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid
explain why most multicellular organisms use an iron-containing protein for oxygen binding rather than free iron. your
A solution is made by mixing 45.0 mL of ethanol, C2H6O, and 55.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C
describe the variational principle. explain how itprovides the foundation for most modern quantum
A solution is initially 0.050M in acetate, CH3COO- (Kb = 5.6 x 10^-10). 10.0mL of 0.10 M HCl is added. Write a chemical equation for the neutralization reaction that occurs.
Problem- Gallium metal, ga, crystallizes in a body-centered arrangement. What is the density of Ga if its atomic radius is 147.1 pm
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