q (rotational) problem - Calculate the ratio of HCL molecules in the first excited rotational state to those in the ground state @ 25 C. Assume an equilibrium bond distance of 1.275 angstroms.
the angstrom part of the ...
Energy and Wavelength - 1.) Electrons can be ejected from a piece of molbdenum metal using UV light if it has a frequency of 1.1x10^(15) or higher.
a.) Irradiation of a block of molybdenum metal with 250 nm light would l ...
Do I need to find what r is to answer the problem? - What is the average distance of an electron from the nucleus at a H atom? The normalized wave function is SI=1/sqrt pi *(1/a0)^3/2 * exp(-r/a0) where a0=0.52918 angstroms.
Converting weight percent to molarity - What is the Molarity of a solution of 10% by mass cadmium sulfate, CdSO4 (molar mass = 208.46 gram/mol)? The density of the solution is 1.10 g/ml. Show work and thanks for your time and help.