Mass percentage of nitrogen in the sample
If 28.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
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A sphere of radius a has a bound charge of Q distributed uniformly over it. The sphere is surrounded by a uniform fluid dielectric medium of permittivity .The fluid contains a free charge density given by P(r)=-kV(r), where k > 0 and V(r) is
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