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As the two gases diffuse down the tube, a white ring of NH4X forms 86.3 cm from the ammonia flask. Identify element X. A flask of ammonia is connected to a flask of an unknown acid HX by a 1.26 m gl
Determine the total number of lines in the spectrum? An A3M2X4 spectrum, where A, M, and X are protons with distinctively different chemical shifts, and JAM > JAX > JMX.
How old is the fossil when a fossil was analyzed and calculated to have a carbon-14 level that is 58.0 that of living the organisms. Where the half-life of C-14 is 5730 years.
Determine the predominant type of intermolecular force (London dispersion, dipole-dipole, hydrogen bonding) in each of the following compounds.
Calculate the equilibrium molar ratio of nitrogen to oxygen ([N2]/[O2]) dissolved in the water which is exposed to air at 298 K. Air contains 78% N2 and 21% O2 (mole percentages).
According to the Heisenberg uncertainty principle, calculate the minimum uncertainty with which it's position can be known? An electron in a hydrogen atom has a speed of 4.42x10^8cm/s with an uncer
A sample which is having 3.87 mg of ascorbic acid gives.58 mg H2O and 5.80mg CO2 on combustion. Determine the percentage composition of this compound? When the ascorbic acid contains only C,
Determine the melting point of ice under a pressure of 10MPa. Suppose that the density of ice under these conditions is approximately 0.915 g cm-3 and that liquid water is 0.998 g cm-3
Determine the energy of the lowest nuclear spin state in a magnetic field of the 8.50 T. 33S has a nuclear spin of 3/2 and a nuclear g-factor of 0.4289.
Find out the resonance frequency for deuterium in this spectrometer in MHz? Explain which of the following systems will have an energy level separation that is largest (a) A proton in a 400 MHz NMR
If he is 39 ft below the surface of the water when atmospheric pressure at the surface is 0.97 atm? Determine the pressure in atmospheres on the body of a diver.
Discuss how high in the meters must a column of water be to exert a pressure equal to that of a 760-mm column of mercury? When the density of water is 1.0 g/mL, where as that of mercury is 13.6g/mL
Assuming rapid reaction rate, calculate the minimum PH necessary to reduce these metal concentrations to acceptable levels. Is this Ph consistent with what you might expect of the LAKE.
Determine the pH of a solution that is prepared by mixing the 1.35g of sodium nitrite, NaNO2, with 100.0 mL of 0.095 M HCL. Ka for HNO2=6.0*10-4.
Determine the molarity of the dye in a solution with an absorbance of the 0.118 at 560nm? A student measures a certain blue dye to be 24.16M-1 at560nm.
Explain how would a student make 500.0ml of a 0.07000M solution of iron (III) use a stock solution that is 0.2550 M in iron (III)? Discuss how this would be done.
A sample which is having 0.213 mol of a mixture of carbon dioxide and nitrogen with a total pressure of 860. torr is exposed to solid the calcium oxide which reacts with the carbon dioxide to produc
Determine the amount in mL of ethanol that must be added to one liter or water to achieve a solution with this composition and estimate the Vmix The densities of pure water and ethanol at this tempe
Estimate the ratio of the concentrations of the acetylsalicylate ion to acetylsalicylic acid that has a pH adjusted to the 4.13 by the use of strong base or strong acid. Aspirin is a product of the
What will the final temperature of the mixture know the specific heat of water is 4.18 J/go C if 100 g of liquid water at the 100 o C and 200 g of water at 20 o C are
Strontium cyanide has both covalent and ionic bonds. Outline the Lewis structure for this chemical. Is this molecule polar or non-polar?
Estimate the boiling point of a solution which is obtained by dissolving the 1 mole of a solute in the 1 kilogram of water. First use the equation relating the boiling point depression to t
Discuss is the potassium hydroxide used in this experiment a catalyst or a reagent? Explain by showing the balanced reaction equation.
Explain why the number of GC peaks observed for the alkenes product in this experiment is smaller than the number of isomeric alkenes that are produced in this reaction
Make sure to include the activating reaction among FeBr3 and Br2 in your mechanism. Give a detailed, stepwise mechanism for the reaction of benzene with the Br2 and FeBr3.