How Many Electrons Are Removed from a Charged Copper Ball?

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Homework Help Overview

The problem involves a 50.0 g ball of copper with a net charge of 2.00 µC, focusing on determining the fraction of electrons removed from the copper. The context includes concepts from chemistry and physics, particularly relating to atomic structure and charge.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants discuss how to calculate the number of copper atoms in the given mass and relate this to the charge of the ball. There is an inquiry about the relationship between atomic mass and the number of atoms, as well as the concept of moles.

Discussion Status

The discussion is in an exploratory phase, with participants providing guidance on how to approach the problem. One participant has noted the importance of Avogadro's Number in determining the number of atoms in the copper ball.

Contextual Notes

There is a mention of the original poster's uncertainty due to a lack of recent chemistry knowledge, which may affect their ability to engage with the problem fully.

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Homework Statement


A 50.0 g ball of copper has a net charge of 2.00µC. What fraction of the copper’s electrons has been removed? (Each copper atom has 29 protons, and copper has an atomic mass of 63.5.)

Homework Equations


1.00 C× (1proton)/(1.60×10^−19C)=6.25×10^18 protons
C = coloumb, the SI unit of charge

The Attempt at a Solution



I don't know where to begin. I haven't taken Chemistry in a long time so I'm pretty stumped.
 
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mysticbms said:

Homework Statement


A 50.0 g ball of copper has a net charge of 2.00µC. What fraction of the copper’s electrons has been removed? (Each copper atom has 29 protons, and copper has an atomic mass of 63.5.)

Homework Equations


1.00 C× (1proton)/(1.60×10^−19C)=6.25×10^18 protons
C = coloumb, the SI unit of charge

The Attempt at a Solution



I don't know where to begin. I haven't taken Chemistry in a long time so I'm pretty stumped.
How many copper atoms are there in 63.5 grams of copper?
 
The atomic mass tells you the number of grams making up a mole of a substance. A mole is a specific number of particles (look up Avogadro's Number). So start by determining how many atoms comprise the 50.0 g ball of copper.EDIT: Beaten to the punch by SammyS!
 
Got it thanks.
 
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