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What part of the electromagnetic spectrum is known as the infraredregion? Express your answer in terms of both frequency(wavenumbers) and wavelength (microns).
A sample of solid Ca(OH)2 is stirred in waterat 30 degree C until the solution contains as much dissolvedCa(OH)2 as it can hold. A 100.-mL sample of this solution is with drawn and titrated with 5.0
The decomposition of 2HI to H2 + I2 at 508C has a half like of135 min when the initial pressure of HI is 0.10atm and 13.5 min when the pressure is 1.00atm.
You have two perfectly insulated cups. One contains water and the other contains an equal volume of another liquid that has half the density of water and twice the specific heat capacity.
Suppose you have a buffer at pH 5.0 that is 1.00 M in HX and 1.00 M in X- , where HX is a weak acid with Ka =1.0 x 10^(-5) M. Calculate the effects of adding 50 ml of 1.0 M HCl to a 1-liter portion
Ammonia is commonly made form N2 and H2 bythe Haber process. Because the reaction reaches equilibrium before going completely to product, the stoichiometric amount of ammoniais not obtained.
Calculate the concentration of nonelectrolyte solute particlesin human blood if the osmotic pressure is 7.53 atm at37oC, the temperature of the human body.
Calculate the mass in grams of urea that must be added to 150.g water to give a solution whose vapor pressure is 2.5mm Hg less than that of pure water at 40oC (vp H2O at 40oC=55.34mm Hg)
If 25.0 mL silver nitrate solution reacts with excessive potassium chloride solution to yeild 0.628 g precipitate, what is molarity of the silver ion in the original solution?
The mass spectrum of an organic compound,C40H82 contains M+ and M+1 peaks. If we assume the intensity ofM+ peak 100, what would be the intensity of M+1peak? Note: Ignore any effect of higher isotop
Lemon juice is a complex aqueous solution that does not freeze in ahome freezer at temperatures as low as -11 °C. At what temperature will the lemon juice freeze if it effective molality is the
The label of an antacid tablet bottle states that each tabletcontains 480 mg of CaCO3. A tablet weighs 1.40 g. What weight of the tablet will be required to use 20mL of0.050 M EDTA solution?
How much KNO3 must be added to 500ml of media solution such that it would contain 0.1 M KNO3? What is the equivalent in ppm?
A piece of metal with mass of 125grams is placed into a graduatedcylinder that contains 25.0ml of water raising the water level to56.0ml. what is the density of the metal?
A spherodial bacterium with diameter of 1 um contains two molecules of a particular protein. What is the molar concentration of the protein? How many gluclose molecules does the cell contain when it
A student took 0.0040 moles of kyptonite metal and reactedit with water in a manner similiar to that used in this experiment.She then titrated the resulting solution and found that it required2.0 ml
Suppose you have a buffer at pH 5.0 that is 1.00M in HX and 1.00 M in X-, where HX is a weak acid with Ka = 1.0 x 10^(-5) M. Calculate the effects of adding 50ml of 1.0 M HCl to a 1 liter portion of
The density of a certain gaseous compound of nitrogen and oxygen is 2.00g/L at 297 K and 1.06 atm. What is the molecular mass of the compound? Its molecular formula?
A reaction has a standard free-energy change of -13.00 kJ mol -1 (-3.107 kcal mol -1 )Calculate the equilibrium constant for the reaction at 25 degreeC.
Consider an Ideal Gas being heated reversibly from T1 to T2 at a constant volume and then allowed to expand isothermally and reversibly back to its original pressure. What is the change in interna
Stearic acid (C18H36O2) and palmitic acid (C16H32O2) are common fatty acids. Commercial grades of stearic acid usually contain palmitic acid as well. A 1.115g sample of a commercial-grade stearic ac
The work done when a gas is compressed in a cylinder is 351J. During the process, there is a heat transfer of 269J from the gas to the surroundings. Calculate the energy for this process.
Calculate, by explicit summation, the vibrational partition function and the vibrational contribution to the molar internalenergy of I2 molecules at (a) 100 K (b) 298 K given thatits vibrational ene
How does adding a small amount of a Grignard reagent solution to a Grignard reaction help the reaction get started?
Plasma is the fluid portionof blood. The concentraton of acetylsalicylic acid (aspirin,C9H8O4, molar mass=180 g/mol) in your plasma is found to be 2.99 x10-4M after you take two tablets of aspirin.