Show that the statement that the Sun’s atoms are made up of 92%
Hydrogen is consistent...
Show that the statement that the Sun’s atoms are made up of 92%
Hydrogen is consistent with its mass being 73% Hydrogen. Hint:
Using the simplifying assumption, which is nearly true, that the
Sun is entirely Hydrogen and Helium.
William Prout (1815) proposed that all other atoms are built up of hydrogen atoms, suggesting that all elements should have integral atomic masses based on an atomic mass of one for hydrogen. This hypothesis appeared discredited by the discovery of atomic masses, such as 24.3 u for magnesium and 35.5 u for chlorine. In terms of modern knowledge, explain why Prout’s hypothesis is actually quite reasonable.
carbon, hydrogen, oxygen and nitrogen make up the bulk of the
atoms in the human body. However, there are many trace elements
present as well. Pick three of these trace elements and do a little
Internet research to find out where they're found and what they're
used for in the body.
The sun is mostly composed of hydrogen-1 atoms.
When two of these hydrogen-1 atoms collide, it produces no nuclear
reaction. Why?
And
How does the collision between two hydrogen-1 atoms in the sun
become a nuclear fusion reaction?
Which spectral lines in the emission spectrum of
hydrogen atoms can be observed if the atoms are excited by
electrons with kinetic energy E_kin = 13.3eV?
Consider two identical boxes filled with hydrogen atoms. The
atoms in Box A are illuminated by a beam of ultraviolet light,
while the atoms in Box B collide with a beam of electrons. The
light has a wavelength of 97.3 nm in vacuum. Each electron in the
electron beam has the same energy as each photon in the beam of
light.
For electrons, the potential energy levels are the difference
between the excited energy state that the atom is knocked...
For a gas of neutral hydrogen atoms, at what temperature will
equal numbers of atoms have electrons in the a) ground state (n =
1) and in the first excited state (n = 2) and b) the ground state
(n = 1) and second excited state (n = 3)?
Show all work.