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Compute the volume in milliliters of a .45 mol/L barium chlorate solution that contains 125. mmol of barium chlorate.
Hemoglobin has a positive charge of +5 and a radius of 3.55 nm in water. How far will the protein travel in one hour in an electrophoresis gel at 25C when a field
a column of air with a pressure of 1.57 x 105 Pa and an area of 1.07 m2 and given that the acceleration due to gravity is 9.8 m/s2, what is the mass of the column.
what is the formula used to determine the mass of KClO3 to form a saturated solution in 250g of water at 30 degrees celcius
4.236-g sample of a hydrocarbon (CxHy) is combusted in O2 completely to give 3.810 g of H2O and 13.96 g of CO2. What is the empirical formula of the hydrocarbon?
The nitrate ion (NO3-) is a very poor nucleophile. In fact, solvents such as water or methanol (also weak nucleophiles) are more reactive nucleophiles than the nitrate ion
A sample of zinc weighing 2.077 g is dissolved in 2.00 M HCl. What (minimum) volume of HCl is required to dissolve the Zn? (Zn dissolves in HCl to form Zn2+
What [hkl] direction connects the adjacent face-centered positions 1/2, 1/2, 0 and 1/2, 0, 1/2? Illustrate answer with a sketch.
A stock solution is prepared by adding 22 mL of 1 M Na3PO4 to enough water to make 73 mL. What is the PO43- concentration of 30 mL of the stock solution?
find the number of representative particles in each given substance 1 3.00 mol sn2 0.400 mol kcl3 7.50 mol so24 4.80 x
The pH of a solution of ammonia, NH3, is measured at equilibrium and found to be 11.48. Given that Kb for NH3 is 1.8 X 10?5, what was the initial (before equilibrium) concentration of NH3
Assuming that the resolution of an electron microscope is equal to the de Broglie wavelength of the electrons used, to what speed must the electrons be accelerated to obtain a resolution of 0.30 {nm}
Sodium carbonate was used to precipitate silver from a solution. 6.00 grams of silver carbonate were recovered from 1.500L of solution. What was the concentration in ppm of silver ions in the original solution?
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