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When copper is bombarded with high-energy electrons, X-rays are emitted. Calculate the energy (in joules) associated with the photons if the wavelength of the X rays is 0.154 nm.


الجواب :: 1.29×10^-15



What is the final volume (in liters) if the 30.0L of a gas cooled from 2000C to 10C at constant
pressure ?



الجواب :: 17.4L


What is the density of NH3 gas at 100 0C and 1.15 atm?


الجواب :: 0.638 g L-1