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Photosynthesis uses 660 nm light to convert carbon dioxide and water into gluclose and oxygen. calculate the energy of a mole of a photon
A proton is accelerated from rest to 0.75c. Find the relativistic momentum of the proton moving at 0.75c.
Terminal alkynes are acidic compounds, with pKa values around 25. That means they are about: a. one million times more acidic than water b. one billion times more acidic than water c. one billion ti
Homologous recombination is initiated Homologous recombination is initiated
An electron orbiting a hydrogen atom has an initial energy of -0.544 eV. The atom emits a photon, then absorbs a photon, What was the wavelength of the emitted photon
0.100 moles of NaOH are combined with 0.125 moles acetic acid. The mixture is taken to a final volume of 100.0 ml. What is the expected pH of the solution. Ka = 1.76 x 10^-5
A common flea that has a mass of 0.008 g can jump vertically as high as 19 cm. Estimate the wavelength for the flea immediately after takeoff
What are the alkene products of 2-bromo-3-phenylbutane treated with sodium methoxide
A beam of photons that have a wavelength equal to 6.8pm is scattered by electrons initially at rest. What is the change in wavelength of the photons
A ray of sunshine is passing from diamond into crown glass; the angle of incidence is 35.00 degrees. Determine the angle between the refracted blue and red rays
How many Protons, Neutrons, and Electron of 63Li+. What are the mass number and atomic number of each of these atoms
Given the information below, calculate the heat provided by combustion of 66.1g of propane (C3H8). ?Hf° (C3H8(g)) = -103.85 kJ ?Hf° (CO2(g)) = -393.5 kJ ?Hf° (H2O(?)) = -285.8 kJ Can Som
The literature Ksp value for Mg(OH)2 is 1.810?11. (a) Calculate the theoretical [OH-] in a saturated solution of Mg(OH)2.(b) What volume of 0.00209 M HCl would be required to neutralize the OH- in 1
A bat flying in complete darkness emits high frequency sound of 100 kHz to locate objects. What is the frequency in which the bat is received
Light of wavelength 646nm from a distant source is incident on a slit .720mm wide, What is the distance between the two dark fringes on either side of the central bright fringe
A. 4.00×10?3 HBr are dissolved in water to make 14.0L of solution. What is the concentration of hydroxide ions,OH^-, in this solution? B. 2.00g of NaOH are dissolved in water to make 2.00L of
A silver wire 2.6mm in diameter transfers a charge of 420C in 80minutes. Silver contains 5.8 free electrons per cubic meter. What is the current in the wire
A solid cylinder has an area of 10cm^2 and a height of 1.0m. The cylinder is composed of 2 different materials with mass densities of 2000 kg/m^3, what is the mass of the cylinder
A grade school student plans to build a 38-power telescope as a science fair project. What focal length is needed for her objective
Determine the vapour pressure of a solution at 55C that contains 34.2 g NaCl in 375 ml of water. The vapour pressure of pure water at 55C is 118.1 torr. Assume a solution density of 1.00 g/ml.
An AC generator has a sinusoidal EMF with a maximum value of 25.0 V and a frequency of 60.0 Hz; what is the power output of the generator
An olive is at the bottom of a glass of alcohol (n = 1.36), 5.10 cm beneath the surface. what is the apparent depth d' of the olive
The angle of incidence of a light beam in air onto a reflecting surface is continuously variable. What is the index of refraction of the reflecting material
The polarizers are rotated, so that the second polarizer has a transmission of 43.6 degrees with respect to the first polarizer, find the intensity of the beam
Write a reaction mechanism for the chlorination of 1-butene by Cl2. Use curved arrows to show electron movement. Show structures of key reaction intermediates and products and indicate the stereoche