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A solution of a water soluble polymer having a molar mass of 3.20*10^5g/mol is placed in an osmometer and allowed to equilibrate. After equilibration at 298K, the difference in height between the top of the solution in the osmometer's tube and the water level outside the tube is found to be 8.00cm. The total volume of the polymer solution is 10mL. What mass of this polymer was initially added to the osmometer? Pleases assume that the density of the aqueous polymer solution remains 1.00g/mL.
The surface area of 100 g of glucose > than that of 1 g. give explanation why the solubility does not increase with the amount of solid deposited at the bottom of the flask?
What are the frequency and the energy of a photon of light at each of these wavelengths. What are the energies in kJ/mol
Calculate the maximum mass of calcium metal that should be used in this experiment with a 50mL eudiometer tube for gas collection. Assume that the hydrogen generated occupies 45 mL at STP. The experiment is: reaction of .054 g of Al with 100 mL of..
a) Gaseous Cl2 in the stratosphere to form gaseous Cl atoms. b) Gaseous CO reacts with gaseous H2 to form liquid methanol, CH3OH. c) Calcium phosphate precipitates upon mixing Ca(NO3)2(aq) and (NH4)3PO4(aq).
If the ionization constant of water, Kw, at 40°C is 2.92 x 10-14, then what is the hydronium ion concentration and pH for an acidic solution
During this process, 346 J of work was done by the system and its internal energy 9185 J. What is the specific heat of the gas?
The shielding of electrons gives rise to an effective nuclear charge,Zeff , which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a valence electron of boron and oxygen, respectively
Treatment of X with Ag(NH3)2 (silver diamine complex), yields a solid Z. When X is treated with H2O/H2SO4, an optically active product W, C7H14O, is formed. Draw the structures of X, Y, Z, and W.
1. structure of cyclic trimetasilicate ion?2. structure and bonding inxef4.3. why has cd4 slightly lower boiling point
Explain why it is necessary to remove the Erlenmyer flask from the hot water bath at the moment the volatil liquid disappears
the polarogram for 20ml of solution that was 3.6510-3 in cd2 gave a wave for that ion with a diffusion current of
a balloon is filled to a volume of 7.00x102 ml at a temperature of 20.0 degrees c. the balloon is then cooled at
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