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Question: A solution is prepared by adding 1.75 mg of an unknown protein to enough water to make a 13.5 mL solution. The osmotic pressure of the solution is measured to be 1.6E-3 bar at 25 C. What is the calculated molar mass of the protein?
when relatively small amounts of magnesium burn the fires are extinguished using commercially available dry powder. why
A blackbody emits light with a frequency of 1.54 x 1014 s-1. The total energy emitted per second at this frequency is 1.02 x 10-11 J. How many photons are emitted per second
A mixture of 6.0 mol of H2(g) and 3.0 mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 27 C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz ({\rm MHz}), where 1\; {\rm MHz}=10^6\; {\rm Hz}. Calculate the broadcast wavelength of the radio station 102.7 FM
The label on an aerosol spray can contains a warning that the can should not be heated to over 130°F because of the danger of explosion due to the pressure increase as it is heated.
container and found that no change had occurred after one week. Offer possible explanations for the lack of reaction. Assume that A, B, and C are totally miscible liquids.
calculate the osmotic pressure associated with 50.0 g of an enzyme of molecular weight 98,000 g/mole dissolved in 2600 mL
If you were to prepare a 1.00 solution of beginning with water at 21.5, what would the final temperature of the solution be (in ). Assume that the specific heats of both pure and the solution are the same, 4.18.
Sketch a molecule of Pbr3Cl2 in which the chlorines are in axial position position. Sketch another molecules of Pbr3Cl2 in which the chlorines are equatorials positions.
Describe two different methods one could employ to determine if two white solids, that have identical melting points, are the same compound or two different compounds
If the vapor above the original solution is condensed and isolated into a separate flask, what would the vapor pressure of chloroform be above this new solution
what is the concentration of (HOCl), at equilibrium if 0.0230 mol of H2 and 0.0230 mol of ClO2 are initially placed in a 5 L vessel? What is the concentration of ClO2 in the above problem at equilibrium?
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