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Luckily, he lands in a snow-bank, making a crater 1.1 m deep, and survives with just minor injuries. Supposing the pilot's mass is 82 kg and his terminal (that is, maximum) velocity while falling i
Determine the frequency and wavelength of the emitted photon when an electron drops from the n = 4 to the n = 2 level in the Bohr hydrogen atom.
Assuming that the container is totally full that the temperature is 28.9 degrees C, and determine the percent (by volume) of air that would be displaced if all of the liquid nitrogen evaporated when
The top of the ramp is 1.50 m higher than the surface of the water, and the ramp is inclined at the angle of 30.0° above the horizontal. The seal reaches the water having a speed of 4.90 m/s. (
It is noted that the block-spring system, if compressed 5.0 cm and released, stretches out 2.3 cm beyond the equilibrium position before stopping and turning back. Determine the coefficient of kinet
Aqueous hydrochloric acid reacts with solid lead (II) sulfide to produce dihydrogen sulfide gas and the solid lead (II) chloride? Would it be: PbS(s) = 2H2O...
Determine the function which models number of hours of daylight t days after January 1. Suppose that year has 365 days and that spring equinox, when day is 12 hours long.
By using the mirror equation and image distance of 10.7m represent if this design consists of spherical aberration (unfocused). This is a question dealing with the Hubble space telescope.
The p Kb of pyridine is 8.75. Calculate the pH of a 0.145 M solution of pyridine? Pyridine is a weak base that is used in the manufacture of pesticides and the plastic resins.
Compute the conversion energy of C to D via a one-step mechanism. The activation energy of this reaction is 3 kal/mol. The energy distinction among D and the transmission state is 7kcal/mol. Estimat
The initial temperature of both solutions was the same 18.46C. A quantity of 4.00x102 ml of 0.600MHNO3 is mixed with the 4.00x10 2 ml of0.300M Ba (OH)2 in a constant -pressure calo
Determine the final pressure of the sample, if the final volume is 3.99 L. At 0.°C and 2.40 atm pressure, a sample of carbon dioxide gas occupies a volume of 7.70 L. The sample is compressed an
Cp,m = 25.4 J/(mol·K). Cv,m = 24.3 J/(mol·K). Assume that CP and CV are constants. Cylinder A is heated at constant pressure, cylinder B at constant volume.
Assume you invest $580 at 10% compounded continuously. Write the exponential function to model amount in the investment account.
If the initial reading of the buret volume changed from 48.0 mL to a final reading of 17.0 mL at the endpoint of the titration of the impure sample, determine the percent of pure tartaric acid in th
Calculate the final temperature of the water, assuming where no heat is lost to the surrounding? A 36.0 g sample of water at 7.0 C is mixed with the 53.0 g sample of water at 57.0 C in
The pilot, flying at the altitude of 5000 feet, wants to approach numbers on the runway at the angle of 10 degree. Find, to the nearest 100 feet, distance from airplane to numbers at starting of de
Suppose you prepare a solution with a very high absorbance that is suspect in not following the linear relationship. The equation, A= a X b X c, becomes nonlinear at high concentrations of the absor
A swimming pool of area 50m2 is directly exposed to the sun. In July in Los Angeles, the incident sunlight at ground level has a power density of 1.2kW m-2 at noon. Determine the maxim
Calculate the freezing point of benzene at 1000 atm when the benzene freezes at 5.5oC its density changes from 0.879 g cm-3 to 0.891 g cm -3. Its enthalpy of fusion is 10.59 kJ mol-1.
Identify the pH during the titration of 20mL of 0.2700M benzoic acid,C6H5COOH (Ka = 6.3e-5), with 0.2700M NaOH solution after the following additions of titrant
Calculate the concentration of beta-carotene in the spinach in μg of beta-carotene per gram of fresh tissue (μg/g) if you began with 1.1 g of fresh spinach leaves and measured you had 1.681&t
How much hundred proof Whiskey must the patient be made to drink in order to reduce the catalytic activity of LADH towards methanol by 95% when a patient X was brought to the Emergency Room for drin
Determine the t1/2 in minutes? Discuss In how much time 35% of the substrate will be consumed? Discuss how much starting material remains after threet1/2
Determine the numbers of liters of hydrogen gas, calculated at STP, and are formed? A sample of 0.100 mol magnesium metal and an excess of the aqueous hydrochloric acid are combined and react to com