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For phenylanaline can be modeled as particle on a ring. Calculate the wavelength of the transition from ground state to the first excited state.
The half life of a first order reaction is 13 min. If the initial concentration of reactant is 0.085 M, what is its concentration after 8.2 minutes.
Given the initial rate data for the decomposition reaction, A = B + C, determine the rate expression for the reaction [A],M = .0625, 0939, .125; -changeA/changet M/s = 5.44 *10^-7, 8.16 * 10^-7, 1.0
The equilibrium constant for the interconversion of PCl5 and PCl3 is 0.0121: PCl5 = PCl3+Cl2. A vessel is charged with 0.123 mol PCl5. At equilibrium what is the concentration of PCl3
What polypeptide would be synthesized from the following template strand of DNA:3' CGG AGA CGG ACG 5'
At its boiling point of 100C, 724 kJ of heat is required to vaporize 321 g of water. What is the molar enthalpy of vaporization of water
Add charges, single electron dots, and/or pairs of dots as appropriate to show the Lewis symbols for the most stable ion of each element. Treat as the valence shell in all cases. To add formal charg
Calculate the percentage yield of 1M of potassium chromate (50 ml) and Lead (II) nitrate 1 mol (50ml) Which best represents the rate equation for the rate-determining step of this reaction
Calculate the theoretical yield of 1M of potassium chromate (50 ml) and Lead (II) nitrate 1 mol (50ml)
What is the balanced molecular equation for the reaction between (Pb(NO3)2 and K2CrO4). Complete ionic and net ionic equations
Tires in a bike have been filled to a pressure of 53.0 psi at 19.0 deg C. after riding around for a while, the volume of the tire increased by 2% & the temp was now 32 deg C. whats the new press
At a particular temp and pressure it takes 4.55 min for a 1.5 L sample of He to effuse through a porous membrane. how long would it take for 1.5 L of F2 to effuse under the same conditions
In coffee, how much would the boiling point (in C) of the water be raised by the addition of 0.2 g of caffeine (C8H10N4O2) to 5.0 L of water in making this so much coffee
What should be the concentration of the NaCl solution (in g/L) so that it will have the same osmotic pressure as the blood at 37 deg C
The rate law for the reaction, 2NO(g) + O2(g) 2NO2(g), is found to be: rate of reaction = k [?NO]2?[O2?]2. The first, fast step is 2NO(g) N2O2 (g)
A lab bench has 3 one L stoppered flasks. Flask A contains one mole of NH3 gas. Flask B contains one mole of N2 gas & Flask C contains one mole of SO2 gas. All are at the same temperature.
what is the total sample size ( in g) of aluminum chloride containing 5.0 g cholrine? MM(AlCl3)=133.3 g/mol
Consider the following first-order reaction: Reactant Product. This reaction has a half-life of 28.2 seconds. Calculate the rate constant.
A specimen of aluminum having a rectangular cross section of 15 mm x 18 mm is pulled in tension with 55,000 N force, producing only elastic deformation. Calculate the strain
A sample that has the formula MgCl2.6H2O loses a portion of water when it is dried in an oven but undergoes no other changes. If the student started with 10.000 g of the compound, and ends with a re
The head of a strike anywhere match contains tetraphosphorous trisulfide, P4 S3. In an expriment, a student burned this compound in an excess of oxygen and found that it evolved 3677 KJ of hea per m
Pyruvic acid, HC3H3O3, is involved in cell metabolism. It can be assayed for (that is, the amount of it determined) by using a yeast enzyme. The enzyme makes the following reaction go to completion.
what is the weight of O in 742.0 g of citronella oil that has the chemical formula C10H18O
How to calculate wavelength of light emitted when transition in hydrogen atom? How caclulate wavelength in nanometers?