Volume, moles, density, molar mass =>separation of molecules

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SUMMARY

The discussion focuses on calculating the order of magnitude of the separation between hydrogen molecules and lead atoms based on their respective volumes. It establishes that one molecule of hydrogen occupies 3.7x10^-26 m³, while one molecule of lead occupies 2.99x10^-29 m³, resulting in a volume ratio of 1.22x10^3. The participants emphasize the importance of considering hydrogen as H2 molecules rather than individual atoms and suggest calculating the average distance between atoms in a molecule by subtracting atomic sizes from molecular sizes.

PREREQUISITES
  • Understanding of molecular and atomic structures, specifically hydrogen (H2) and lead (Pb).
  • Familiarity with volume calculations in cubic meters (m³).
  • Knowledge of ratios and order of magnitude concepts.
  • Basic principles of chemistry related to molecules and atoms.
NEXT STEPS
  • Research the molecular structure of hydrogen and its implications for volume calculations.
  • Study the atomic structure of lead and its relevance in density calculations.
  • Learn about calculating distances between atoms in a molecule using molecular sizes.
  • Explore the concept of order of magnitude in scientific calculations.
USEFUL FOR

Students in physics and chemistry, educators teaching molecular structures, and anyone involved in calculations related to atomic and molecular separations.

FelixISF
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Homework Statement


I am doing an exercise from my physics book right now.
I am given:

1 molecule of hydrogen corresponds to 3.7x10^-26 m^3
1 molecule of led corresponds to 2.99x10^-29 m^3

the ratio of these volumes is 1.22x10^3

Q: Determine that the order of magnitude of the ratio separation of hydrogen molecules / separation of lead atoms is 10



Homework Equations





The Attempt at a Solution


I have calculated the given data i described above, this is part d of the question and i have no idea!
 
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you are talking about molecules and not atoms. Therefore, as an example hydrogen normally comes in pair, meaning "H2". If you say that this molecule is 3.7 x 10^-26 m^3, than you can find the distance that separate them, by know the size of the hydrogen atom. You do the same for the lead molecule and make a ration.

Cheers
 
the question is exactly the one i stated in my first post. hydrogen molecules and led atoms.
any ideas ?
 
Ok, you ddi not get my last post. To find the average distance between the two atoms in a molecule, you need to substract the size of the molecule by the size of the atoms. Once you have the two, make a simple ratio.

Cheers
 

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