How Many Coulombs of Positive Charge Are in the Nuclei of 2.0 Mol of O2 Gas?

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Homework Help Overview

The problem involves calculating the total positive charge in the nuclei of 2.0 moles of O2 gas, focusing on the relationship between moles, atoms, and charge. The subject area pertains to electrostatics and atomic structure.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the use of Avogadro's number to determine the number of protons in the gas and how to calculate the total charge from that. There is confusion about applying the equation correctly and whether the gas's diatomic nature affects the calculations.

Discussion Status

Some participants have attempted calculations based on the number of protons and their charge, but there is uncertainty regarding the correct approach. Guidance has been offered to reconsider the nature of the gas, indicating a productive direction in the discussion.

Contextual Notes

Participants are grappling with the implications of the gas being diatomic rather than monatomic, which may affect the total charge calculation. There is also a mention of the need to re-read the problem statement for clarity.

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Homework Statement



Suppose you have 2.0 mol of O2gas.
How many coulombs of positive charge are contained in this gas in the atomic nuclei?


Homework Equations



q = Ne

The Attempt at a Solution



i guess i have to use the avogadros's number somehow. but not sure how does that fit in this equation
 
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rayhan619 said:
i guess i have to use the avogadros's number somehow. but not sure how does that fit in this equation

Yes you do. What is the definition of Avagadro's number? That gets you most of the way to the answer...
 
so we have 6.023*10^23 atoms in 1 mole.
so in 2 mole we have 6.023*10^23*2 = 12.046*10^23 proton
and the charge of each proton is 1.6*10^-19.
so total positive charge would be 1.6*10^-19*12.046*10^23 = 19.27*10^4
but that wasnt the right answer
 
rayhan619 said:
Suppose you have 2.0 mol of O2gas.
How many coulombs of positive charge are contained in this gas in the atomic nuclei?


Re-read the problem statement... :wink:
 
im sorry i don't get it.
if we use the above equation, then e = q/N = 2/6.023*10^23 = 0.33*10^-23
?
Im lost
 
rayhan619 said:
im sorry i don't get it.
if we use the above equation, then e = q/N = 2/6.023*10^23 = 0.33*10^-23
?
Im lost

The numbers you are using are for a monatomic gas. Oxygen gas is diatomic...
 

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