[JQKingsley]

1. How many krypton (Kr) atoms would have to be lined up to span 1.0 mm?
answer = ______________atoms

2.If the atom is assumed to be a sphere, what is the volume in cm3 of a single krypton (Kr) atom?
answer = _____________cm^3

[Schrödinger]

Forum policy : You need to tell us what you make of the question and your attempts at solving it, if you hope to receive any help

[JQKingsley]

Forum policy : You need to tell us what you make of the question and your attempts at solving it, if you hope to receive any help

Well, considering I haven't taken a Chem class in four years and I stated on my other postings that I am completely lost. So, I would say what I get from the question is nothing. Other than being confused and not knowing how to solve it.

[Jorriss]

Well, considering I haven't taken a Chem class in four years and I stated on my other postings that I am completely lost. So, I would say what I get from the question is nothing. Other than being confused and not knowing how to solve it.

Have you at least tried them yet? These problems actually have no chemistry in them. Take the second one. You want to know the volume of a Krypton atom assuming it's sphere. What's the volume of a sphere?

[Hagrid]

1. Find out the atomic radius of krypton. Divide 1.0mm by that number     

2). Find the formula for a sphere based on the radius of a sphere. Apply the formula to the radius of a krypton atom (it's atomic radius).

I hope this helps