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A sector instrument is designed to operate with a radius of 30.0 cm and an accelerating voltage of 3000 V. Calculate the magnetic field necessary to focus the M positive ion of methane (CH^4)
Some solid trisodium phosphate, Na3PO4, is added to the solution that is formed by mixing 1L of .002 M Al(NO3)3 and 1L of .004 M CaCl2. Which one is going to precipitate first,
The [OH-] = 1.3 x 10^ -6 M for a 0.025 M solution of a weak base. Calculate the value of Kb for this weak base.
What is the maximum height, neglecting all forms of friction, to which a car of mass 1000 kg an be driven on 1.00 gallon of fuel given that the engine cylinder temperature is 2000 degrees celsius and the exit temp is 800 degrees celsius.
Compute the number of rads and rems of radiation in five years from such a level of plutonium.
Hemoglobin, a nonelctrolyte is an iron containing protein found in red blood cells. The osmotic pressure of 25.0 mL of an aq. soln containing 0.658 g of hemoglobin is 9.88x10^-3 atm at 25.0 *C. Determine the molar mass of hemoglobin
Concentrated hydrochloric acid, HCl, has a composition of 37.5 %. The solutes molar mass is 36.461 g/mol. You may assume the molar mass of water is 18.015g/mol.
The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron
How many milliliters of 1.50 M H2SO4 are needed to neutralize 50.0 g of NaOH?
Fish are processed into Fish meal and used as a supplemen- tary protein food. In the processing the oil is First extracted to produce wet Fish cake containing 80 wt % water and 20 wt % bone-dry cake
Titration of the excess unreacted EDTA required 15.9 mL of 0.0220 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN-.
The temperature of the water was 22 Celsius and thebarometric pressure was 735.8 mm Hg. What is the vapor pressure of the water? What is the pressureof dry hydrogen gas?
The iron content of hemoglobin can be determined by converting the iron to Fe2+ and titrating using MnO4 -. A 5.0 g sample of hemoglobin requires 21.6 mL of 0.00310 M potassium permanganate. What is the percent of iron in the hemoglobin sample?
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