ToughSTEM
ToughSTEM
A question answer community on a mission
to share Solutions for all STEM major Problems.
Cant find a problem on ToughSTEM?
0
026 (part 1 of 3) 10.0 points

We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 4.6 g. Find the number of atoms in a nickel coin. Each mole (6.02 x 10^23 atoms) has a mass of about 57.8 g. Answer in units of atoms

027 (part 2 of 3) 10.0 points

Find the number of electrons in the coin. Each nickel atom has 28 electrons/atom. Answer in units of electrons

028 (part 3 of 3) 10.0 points

Find the magnitude of the charge of all these electrons. Answer in units of C
Edit
Community
1
Comment
Solutions
0
(a) we have mass of 6.02*10^23 of atoms of nickel is 58.1 g
so, the no.of atoms in a mass of 4.6g = 4.6/57.8 * 6.02*10^23
= 4.766 * 10^22 atoms
so,the no.of nickel atoms in a mass of 4.6g = 4.766 * 10^22 atoms

(b) total no.of electrons = 4.766 * 10^22 * 28 = 1.334 * 10^24 electrons

(c) magnitude of of each electron = 1.6 * 10^-19 C
so,the magnitude of the charge of all these electrons = (1.6 * 10^-19) * (1.334 *10^24)
= 2.13 * 10^5 C
so,the magnitude of the charge of all these electrons = 2.13 * 10^5 C
Edit
Community
1
Comment
Close

Choose An Image
or
Get image from URL
GO
Close
Back
Close
What URL would you like to link?
GO
α
β
γ
δ
ϵ
ε
η
ϑ
λ
μ
π
ρ
σ
τ
φ
ψ
ω
Γ
Δ
Θ
Λ
Π
Σ
Φ
Ω
Copied to Clipboard

to interact with the community. (That's part of how we ensure only good content gets on ToughSTEM)
OR
OR
ToughSTEM is completely free, and its staying that way. Students pay way too much already.
Almost done!