Calculate the wavelength of the photon in meters
The electron in a hydrogen atom is excited and makes a transition from n=2 to n=7. Calculate the energy of the photon absorbed in joules. Calculate the wavelength of the photon in meters.
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what mass of limestone must have dissolved if 3.05x10^10 kg of calcium hydrogen carbonate was produced?
In what ways were the projectâ??s planning and scope management appropriate? When did the planners begin taking unknowing or unnecessary risk?
A toothpaste contains 0.24 by mass sodium fluoride used to prevent dental caries and 0.30 by mass triclosan. How many moles of are in the tube of toothpaste?
A hollow rectangular masonry pier 600mm*900mm and 150mm thick transmits a vertical load of 500kn in a vertical plane bisecting the 900mm side and at an eccentricity of 100mm from the geometrical axes of the section.
Two straight sections of freeway cross at a right angle. At the point of crossing, the east-west highway is at elevation 150 ft and is a constant +5.0% grade (upgrade in the east direction).
If 450 ml of some Pb(NO3)2 solution is mixed with 600 ml of 3.70 x 10-2 M NaCl solution, what is the maximum concentration of the Pb(NO3)2 solution added if no solid PbCl2 forms?
Since the management of change is a key element of a successful process improvement program, a series of actions were planned, using the IDEAL model as a guide.
A drinking water treatment plant will be designed to process a flow of 15,000 m3/d. The sedimentation tank will have a residence (detention) time of 4 hours and the overflow rate (Q/A) of 16 m3/m2-day.
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What style of leadership is most likely described in this case and why have you reached that conclusion?
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