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An X-ray photon of wavelength 0.976 strikes a surface. The emitted electron has a kinetic energy of 958 eV. What is the binding energy of the electron in?
KE =1/2mv^2; 1 electron volt (eV) = 1.602x10^-19
The purpose of this experiment is to find out which fabric out of polyester, polypropylene, cotton and wool is the most suitable to make a sling back chair.
Methylbenzene and 1,2-dimethylbenzene mix to form an ideal solution. At 90oC, the vapor pressure of pure methylbenzene is 400 Torr and that of pure 1,2-dimethylbenzene is 150 Torr.
Calculate the pH of the solution that results when 100.0 mL of 0.15 M NaOH is added to 50.0 mL of 0.25 M HNO3
Calculate the 1)mls of 100mM of NaOH or HCl 2) grams of disodium phosphate 3) and the mls of water required to make a 200mM phosphate buffer at pH 6.85
what are the ground state electron configuration of the elements in period 2 of this alternate reality?
Aspirin (C9H8O4) is produced through the following reaction of salicylic acid (C7H6O3) and acetic anhydride (C4H6O3). C7H6O3(s) + C4H6O3-> C9H8O4(s) + HC2H3O2
What is the most important attractive forces (London dispersion, dipole dipole, hydrogen bonding) and the number of bonding domains
If 525 mL of gas at 25 degrees is heated to 50 degrees at constant pressure, calculate the new volume of the sample gas.
what would be the chemical equation to this problem? In an investigation of the reaction between copper(II) ions, Cu2+, and hydrazine, N2H4, in alkaline conditions the following observations were made: 25 mL of a solution containing 25 g/L CuSO4.5..
A chemist wants to make 6.5 L of a 0.270 M solution. What mass in grams should the chemist use?
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
What mass of Au is produced when 18.6 ampere of current are passed through a gold solution for 29.0 minutes.
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