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Explain how a cell is able to become more or less sensitive to a specific hormone?
A geothermal system is initially more expensive to set up than a conventional heating and cooling system, but the annual operating costs are much cheaper.
What are the two pKa values for carbonic acid? What is the pH of a 0.100M solution of potassium bicarbonate. What is the pH of a 0.100M solution of potassium carbonate
A student places 1.38g of unknown metal at 99.6 degrees Celsius into 60.50 g of water at 22.1 degrees Celsius. The entire system reaches a uniform temperature at 31.6 degrees Celsius. Calculate the specific heat of the metal
the solubility of oxygen in water is about 4.5 x 10 -2 gl. the water portion of an adults total blood supply is about 5
Finding an organizational leader communicates directly with his or her employees, investors, or customers.
What concentration of the lead ion, Pb+2 , must be exceeded to precipitate PbF2 from a solution that is 1.00*10^-2M in the fluoride ion, F- ? Ksp for lead fluoride is 3.3*10^-8
Calculate the nonstandard emf for each of the following reactions if the concentration of each of the ions in these reactions is 0.0004 molar and everything else is standard (use 298 K for the temperature, R = 8.314 J/mol-K, and F = 96,485 C/mol)
What is the theoretical yield of acetic acid when 22.5 g of methanol reacts with 32.0 g of carbon monoxide in the following equation: CH3OH + CO --> HC2H3O2?
Draw a detailed mechanism for the formation of 1,4-di-t-butyl-2,5-dimethoxybezene from t-butyl alcohol.
Calculate the concentration of ALL species in a 0.01 M solution of NaN3. The Ka value for hydrazoic acid, HN3, is 1.9 x 10^-5.
The volume of HI(aq) required to reach the equivalence point : (c) The pH at the half-neutralization point. d)The pH at the equivalence point
How many milliliters of 69 percent (w/w) HNO3 must you dilute with water to prepare a total volume of 100.0 mL of 7.00 M HNO3. The specific gravity of the concentrated solution is 1.42.
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