Coulomb's Law dealing with electrons & protons?

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SUMMARY

This discussion focuses on calculating the number of molecules in a 0.2 g styrofoam peanut, represented by the formula C8H8. The calculations reveal that there are approximately 1.5 x 10^21 molecules in the peanut. Given that styrofoam is neutral, it contains an equal number of protons and electrons, totaling 1.2 x 10^22 protons and electrons. The discussion also addresses the implications of an excess charge of 0.03C, indicating that the peanut has either gained or lost approximately 1.88 x 10^13 electrons.

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  • Understanding of molecular formulas and stoichiometry
  • Basic knowledge of charge and Coulomb's Law
  • Familiarity with the concept of protons and electrons in atoms
  • Ability to perform calculations involving moles and Avogadro's number
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  • Study the principles of Coulomb's Law and its applications in electrostatics
  • Learn about Avogadro's number and its significance in chemistry
  • Explore molecular weight calculations and their relevance in stoichiometry
  • Investigate charge conservation and its implications in physical chemistry
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Students studying chemistry, particularly those focusing on electrostatics and molecular calculations, as well as educators looking for practical examples of Coulomb's Law applications.

manutd84
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Styrofoam is a polymer containing carbon and hydrogen. Assume the formula is C8H8. How many molecules are in a 0.2 g styrofoam peanut? How many protons and electrons are in this peanut if it carries no excess charges? How many coulombs of positive and negative charge does this represent? If the peanut has an excess charge of 0.03C, how many of its electrons has it gained or lost?
 
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what have you tried to solve this problem ?
 
Well, have you encountered problems like this before, or have you seen any examples like this? What concepts do you need to know on attacking this problem?

Note that you must show your work before we can help you-- it's the forum rules for homework problems. Oh, and I hope you're looking forward to annihilating barca tomorrow night :wink:
 

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