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Albumin is human protein plasma with a molar mass of 69 000 g mol-1. What would be the osmotic pressure of a solution of this protein containing 2.0 g per 100 mL at 25oC. Assume that the experiment is carried out using a salt solution for solvent and a membrane soluble to the salt.
The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.300 M NaOH. A. What volume of NaOH is needed to reach the end point of the titration?
When PCl3(g) (420.9 grams) and 0.007859 mol/L of Cl2(g) in a 390.0 L reaction vessel at 340.0 °C are allowed to come to equilibrium the mixture contains 200.7 grams of PCl5(g). What concentration (mol/L) of PCl3(g) reacted? PCl3(g)+Cl2(g) = PCl5(g..
how many grams of h2o will be formed when 32.0 g h2 is mixed with 32.0 g o2 and allowed to react to form water?a 36.0
Suppose that 266 mL of argon is collected over water at 25 ? C and 786 torr. Compute the volume of the dry argon at STP. The water partial pressure at 25 ? C is 23.8 torr. Answer in units of mL.
The following data were obtained for the determination of iron in serum by a spectrophotometeic method. Assuming the validity of Beer's Law for the experiment calcualte the concentration of iron in serum
exhales 30.0 times per minute, that the exhaled air is at a pressure of 1.00 atm, and that the air behaves as an ideal gas. Calculate the time in hours before a fire fighter using such an air tank runs out of air.
15.0 mL of 0.50 M NaOH is added to a 100.-mL sample of 0.376 M NH3 (Kb for NH3 = 1.8 x 10^-5. What is the equilibrium concentration of NH4^+ ions? The answer is 9.0 x 10^-5 M.
At a certain temperature the vapor pressure of pure benzene and pure toluene are 380 torr and 130 torr, respectively.
Hydrogenation of carbon double bonds C=C (i.e. adding a hydrogen on each carbon atom and thus reducing the double bond into a single bond: H-C-C-H) is a very common process in organic and polymer chemistry.
given two separate solutions 0.100 m ammonia and 0.100 m ammonium chloride calculate the volume of each solution to
When a reddish-brown bromine solution (the solvent is often carbon tetrachloride) is added to the alkene shown below, the brown color of the bromine solution disappears
assign absolube stereochemistry (R or S) to each of the stereocenters in (+)menthol
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