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A 662 KeV photon from 137Cs is compton scattered at an angle 60, calculate the energy of the scattered photon
Considering the balanced chemical equation at the beginning of Section 4.2, why is it incorrect to say that if we burn 2 kg of octane, we would get 16 kg of CO2 as a product
A molecule of a mass m and velocity v strikes a wall and is reflected maintaing the same speed. What is the magnitude of the impulse imparted by the wall to the molecule
A 3kg object moving along the positive x direction with a speed of 10m/s exploeds into a 2kg and a 1kg fragments. what is the speed of the 2kg fragment?
What is the concentration of the ammonium ion (in M) in a solution which contains 51 g ammonium sulfide in 635 mL of solution
The elementary steps for the formation of nitrogen and water from nitric oxide and hydrogen are given below. Identify any intermediates. 2 NO(g) ? N2O2(g) N2O2(g) + H2(g) ? N2O(g) + H2O(g) N2O(g) +
In frame S, event B occurs 2 microseconds after event A and event A occurs at the origion whereas event B on the x-axis at x=3.3km. How fast must an observer be traveling along the +x axis
A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
If wavelength is 5890 , and slits width is 0.25 mm, find its angular separation between central maxima
A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank
A 4.5-kg, three legged stool supports a 68-kg person. If each leg of the stool has a cross-sectional diameter of 3.0 cm, determine the pressure exerted on the floor by each leg
A double-slit apparatus consists of two of slits separated by 0.25 mm with a screen 5.0 cm away. Calculate the wavelength of the light
The same activity is measured for two different isotope samples. One sample contains 0.0450 kg of (atomic mass = 230.033 937 u, t1/2 = 20.8 days). What is the mass of the second sample
Barium and lead both produce a yellow precipitate as part of their confirmation tests. How would differentiate the two
Light of wavelength 60nm illuminates a hydrogen atom in an excited state. What energy level was the electron in initially
Explain why the solubility of different cations groups can be affected by the acidification of their solutions
A soap bubble strongly reflects light of 463nm, wavelength, if the index of refraction of the film is 1.35, what is the thinnest thickness the soap film can be
The index of refraction for violet light in silica flint glass is 1.65, and that for red light is 1.62. What is the angle of deviation for the red ray passing through a prism of apex angle
50 ml of .001 molar naoh were titrated with .50 molar hcl, added with a dropper pipet. If each drop has a volume of .040 ml calculate how many drops of hcl are needed to reach the end point of titra
On a hot day, the temperature of an 81099-L swimming pool increases by 4 degrees celcius. What is the net heat transfer during this heating
Calculate the lattice enthalpy (?Hl° in kJ/mol) of the MF2 metal fluoride using the following data: Bond dissociation enthalpy of F2(g) = 159 kJ/mol Electron affinity of F = -328 kJ/mol Enthalpy
The chemist discovers a more efficient catalyst that can produce ethyl butyrate with a 78.0g yield. How many grams would be produced from 7.95g of butanoic acid and excess ethanol
A chemist ran the reaction and obtained 5.05g of ethyl butyrate. What was the percent yield
What fraction of ice is submerged when it floats in freshwater, given the density of water at a temperature of 0 degrees celcius is very close to 1000 kilograms/meter cubed
Given 7.95g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100 %yield