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The components of a 11.3 mg sample are sufficiently separated by a chromatographic column that is 1.0 cm in diameter and 50 cm long with a flow rate of 0.57 mL/min. In order to separate 261 mg of the sample with similar separation of the components, what size column, diameter and length, should be used? And what volume flow rate should be used?
A solution is prepared by mixing 87.0 mL of 5.00 M HCl and 36.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+ ], [OH - ], and the pH for this solution.
how much energy is lost by 10 kg of silver if it is cooled from 35 degree celsius to 21 degree celsius
Gaseous ammonia (NH3, 2.00 L, 703.8 torr, 23.8C) reacts with aqueous sulfuric acid (H2SO4, 0.500M, 175mL) to produce solid ammonium sulfate. 4.8275 g of product is isolated.
at 80 degrees celsius the vapor pressures of pure liquids X,Y and Z are 385, 190,and 66 mm Hg, respectively. What pressure must be exerted on the surface of a solution containing one mole of X, three mole of Y, and two moles of Z for boiling to be..
A gas at 39°C occupies a volume of 1.67 L. At what Celsius temperature will the volume increase to 2.12 L?
The atmospheric pressure 4.The volume for the vapor to occupy above the liquid 5.The temperature of the liquid
A chemist wants to prepare 0.48 M HCl. Commercial hydrochloric acid is 12.4 M. How many milliliters of the commercial acid does the chemist require to make up 1.48 L of the dilute acid?
Find the concentration of Ca2+ and IO-3 in a saturated Ca(IO3)2 solution prepared by adding Ca(IO3)2 to a 0.015 M solution of KIO3
How many moles of Mg3N2 would be produced when 180.0 g of Mg reacts with 85.0 g of N2.
An ethylene glycol solution contains 21.2 g of ethylene glycol in 85.4 ml of water. Compute the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water)
draw correlation diagram the HOMO of allyl anion and the LUMO of ethylene and comment on the symmetry match of the two.
The mass of an average blueberry is 0.76g and the mass of an automobile is kg. Find the number of automobiles whose total mass is the same as 1.0mol blueberries.
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