How Many Hydrogen Molecules Are in 1cm³ of a Balloon?

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SUMMARY

The discussion centers on calculating the number of hydrogen molecules in 1 cm³ of a balloon containing 1 gram of hydrogen gas, with a molar mass of 2 g/mol. Using the ideal gas law equation, pV=nRT, the final calculated result is 7.5 x 1019 molecules per cm³. This conclusion is derived from the relationship between the volume of gas, the number of moles, and the molar mass of hydrogen.

PREREQUISITES
  • Understanding of the ideal gas law (pV=nRT)
  • Knowledge of molar mass calculations
  • Familiarity with the concept of a mole
  • Basic principles of gas behavior
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  • Learn about Avogadro's number and its significance in chemistry
  • Explore gas density calculations and their implications
  • Investigate the behavior of gases under varying temperature and pressure
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Chemistry students, educators, and anyone interested in gas laws and molecular calculations will benefit from this discussion.

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Homework Statement


In the balloon with volume 4 liters, is 1 gram of hydrogen. How molecules of this gas as found in 1cm3, if the molar mass of hydrogen is 2g/mol?

Homework Equations


pV=nRT

The Attempt at a Solution


in my book the solution final is 7.5*10^19 molecules/cm^3
 
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lindi said:

Homework Statement


In the balloon with volume 4 liters, is 1 gram of hydrogen. How molecules of this gas as found in 1cm3, if the molar mass of hydrogen is 2g/mol?

Homework Equations


pV=nRT

The Attempt at a Solution


in my book the solution final is 7.5*10^19 molecules/cm^3
What's the definition of a mole?
 

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