Mass planetary formation calculation?

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SUMMARY

The discussion centers on calculating the mass of volatile materials, specifically hydrogen and helium, that were not accreted by Earth, given that the mass accreted is 7e23 kg. Participants analyze the composition of the solar nebula, noting that hydrogen constitutes 92.1% and helium 7.8% of the solar mass. The goal is to determine how the mass of these missing volatiles compares to Earth's total mass, which is essential for understanding planetary formation. The conversation highlights the need for clarity on assumptions regarding the initial nebula's composition.

PREREQUISITES
  • Understanding of basic astrophysics concepts, particularly planetary formation.
  • Familiarity with mass calculations in astrophysical contexts.
  • Knowledge of the elemental composition of the solar nebula.
  • Ability to interpret and manipulate percentages in scientific data.
NEXT STEPS
  • Research the methods for calculating the mass of volatile materials in planetary formation.
  • Study the composition of the solar nebula and its implications for Earth’s formation.
  • Learn about the role of hydrogen and helium in the early solar system.
  • Explore the concept of accretion in astrophysics and its significance in planetary mass calculations.
USEFUL FOR

Astronomy students, astrophysicists, and researchers interested in planetary formation and the elemental composition of celestial bodies.

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Homework Statement



Compute the mass of volatile material (specifically just H and He) not accreted by the Earth. Assume the mass accreted by the Earth is 7e23 kg. How does the mass of the missing volatiles compare with the actual mass of the Earth? Use the following table:

Principal Constituents of Sun and Solar nebula:
(Relative to number of atoms in the Sun)
Hydrogen 92.1 %
Helium 7.8 %
Oxygen 0.061 %
Carbon 0.030 %
Nitrogen 0.0084 %
Iron 0.0037 %

I'm confused what the questions want me to do? What assumptions am I supposed to be making? What do these things have in common?

Homework Equations





The Attempt at a Solution

 
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I suppose the question can be reworded to something like "In what mass of the initial nebula there was enough metals (in astrophysics sense) to create Earth".
 

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