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Calculate the radiation dosage (in grays) for an 85-kg person that is exposed for 7.0 seconds to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed and each beta particle has an energy of 1.7× 10-13 J.
In collisions with the walls of the container or with other molecules, energy is conserved. Collisions with the walls of the container or with other molecules are elastic. The amount of space occupied by a gas is much greater than the space occupi..
A rolling axle, 1.50 m long, is pushed along horizontal rails at a constant speed v=3.00 m/s. A resistor R=0.400Ω is connected to the rails at points a and b, directly opposite from each other.
Why is this isolation so difficult? Please explain using the isoelectric point and the effect PH will have on the structure of your product
The infrared spectrum of CH3CH2NH2 shows two absorptions not shwon by bromoethane. Identify the bonds responsible for these two absorptions.
Draw a chair conformer for propylcyclohexane, where the propyl group is in the equatorial position. On the same carbon (C1), show the attached H in the axial position.
What is the percent H2SO4 for a solution consisting of 4.62 equivalencies of H2SO4 mixed with 11.2 kg of water if both portions
Desalination of brackish water is achieved by evaporation. A fraction of feed water is sent through an evaporator and the other is bypassed. The fraction bypassed and the pure water leaving the evaporator are mixed together to give the desalinasie..
Write the net ionic equation to show the formation of a precipitate (insoluble salt) when the following solutions are mixed. Write noreaction if no insoluble salt forms KCl(aq)+Pb(NO3)2(aq)
Which possesses more energy a photon with a wavelength of 528 nm or a photon with a frequency
A student was preparing to recrystallize a solid using mixed-solvent recrystallization. He planned to dissolve the sample in boiling methanol, and then add hot pentane to induce crystallization
The reaction of acylate ethylbenzene with acetylchloride using a friedel crafts reaction to give 4-ethylacetophenone, then react this with benzaldehyde (aldol)
Sdduming ideal-solution behavior, what is the vapor pressure of the solution at 63.5 C What is the mole fraction of ethanol in the vapor above the solution
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