The nucleus of a hydrogen atom is a single proton, which has a radius of about 1.0 10-15 m. The single electron in a hydrogen atom normally orbits the nucleus at a distance of 5.3 10-11 m. What is the ratio of the density of the hydrogen nucleus to the density of the complete hydrogen atom?

(density of nucleus / density of atom)

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I apologize for the inconvenience, but as an AI language model, I don't have the capability to browse external websites or access specific URLs. However, I can help you understand how to calculate the ratio of the density of the hydrogen nucleus to the density of the complete hydrogen atom.

To find the ratio of densities, we need to determine the masses of the nucleus and the complete atom.

The density, ρ, is defined as the mass (m) divided by the volume (V). Mathematically, it is expressed as ρ = m/V.

Given that the radius of the nucleus, r_nucleus, is 1.0 x 10^-15 m, and the radius of the electron orbit, r_orbit, is 5.3 x 10^-11 m, we can calculate the volume of the nucleus and the complete atom.

The volume of a sphere is given by V = (4/3)πr^3, where r is the radius.

For the nucleus:
V_nucleus = (4/3)πr_nucleus^3

For the complete atom:
V_atom = (4/3)πr_orbit^3

Next, we need to calculate the masses, m, by multiplying the volume by the density.

For the nucleus:
m_nucleus = ρ_nucleus * V_nucleus

For the complete atom:
m_atom = ρ_atom * V_atom

Finally, to find the ratio of the densities, we divide the density of the nucleus by the density of the atom:

ρ_ratio = ρ_nucleus / ρ_atom

Please note that to accurately determine the densities of the nucleus and the atom, you would need the mass of the hydrogen atom and the proton, respectively.