E1

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Angelica Mercado 1A
Posts: 21
Joined: Fri Sep 29, 2017 7:04 am

E1

Postby Angelica Mercado 1A » Thu Oct 05, 2017 3:21 pm

Suppose you were able to string together 1.00 mol AG atoms, each of radius 144 pm, into a fiber (one atom wide) by encapsulating them in carbon nanotubes. How long would the fiber extend?

The question provides the radius of 1 Ag atom, 144 pm. Why can't I just solve for the length of the extended fiber using the radius rather than having to multiply 144 by 2 to get the diameter?

Alex Leve 3F
Posts: 20
Joined: Fri Sep 29, 2017 7:07 am

Re: E1

Postby Alex Leve 3F » Thu Oct 05, 2017 4:32 pm

Since the question asks about the length of the atoms strung together, we use the diameter instead of the radius. We want the length of across the entire atom, not just half of it. If we were using the 144 instead of 288, we would only be accounting for half of the length that extends the bottom of the atom to the top of the atom.


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