Length and Distance

# How many picometers are in a kilometer?

###### Wiki User

###### August 15, 2008 1:58AM

1000000000000000

That's one quadrillion

## Related Questions

###### Asked in Elements and Compounds, Atoms and Atomic Structure

### How many gold atoms are there in a sphere that is 13 in diameter?

I will use the volume of a sphere formula and the density of
gold to find this answer.
The radius of gold is 144 picometers. 13 inches (2.54
centimeters/1 in)(1 meter/100 centimeters)(1012 picometers/1
meter)
= 3.30 X 1011 picometers
--------------------------------/2
= 1.65 X 1011 picometers in radius of this sphere
=================================So, that means that the radius
of the gold would be as to the sphere...,
1.65 X 1011 picometers/144 picometers
= 1.15 X 109 picometers of gold radius here
=======================================================( final
answer )

###### Asked in Elements and Compounds

### How many copper atoms in a meter?

I assume you mean laid end to end. 1 meter = 1 X 10-12 in
picometers.
A copper atom is 128 picometers in radius, which means it is 256
picometers in diameter, long and end to end laid out.
so,
256 picometers/1 X 10-12
= 2.56 X 1014 atoms in one meter laid end to end
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