# chemistry stoichiometry

posted by .

My chem teacher gave us this problem
Twelve-gauge copper wire,like the kind commonly used in residential electrical systems, is roughly cylindrical and has a diameter of approximately .1040in. Copper's density is 8.92g/cubic cm and copper atoms have an approximate atomic radius of 135 pm.
a.Calculate the number of atoms it would take to span the thickness, that is, diameter, of one of these wires. Express this value as a number of atoms and a number of moles to atoms.
b.calculate the mass,in grams, of a 100ft piece of copper wire.
c.How many moles of copper atoms would be found in a piece of this wire that is exactly 100ft long? How many atoms?
I tried to convert pm to meters and converting .1040 and then dividing but I don't know if I did it right---Please Help me!!!!!

• chemistry stoichiometry -

It would be far simpler for you to show your calculations and let us check them than for us to work the problems, take the time to post, and let you check our work.

• chemistry stoichiometry -

## Similar Questions

1. ### Chemistry

I am filling out a chem packet. Is what graphite, diamond and fullerene have in common is that they're all made of carbon?
2. ### Chemistry

If the copper is drawn into wire whose diameter is 9.50 , how many feet of copper can be obtained from the ingot?
3. ### Chemistry (algebra I problem)

I feel really dumb because I cant figuer out this simple algebra I problem... 84. The diameter of a copper (Cu) atom is roughly 1.3 x 10^-12 m. How mnay times can you divide devenly a piece of 10-cm copper wire until it is reduced …
4. ### Physics

What length of #22 B&S gauge copper wire is needed to make a resistance of 500 ohms?
5. ### physics

copper has 8.5 x 10^28 electrons per cubic meter. (a) how many electrons are there in 30 cm length a 12 gauge copper wire (diameter 2.05 mm)?
6. ### Physics

A current of 4 A flows in a copper wire 10 mm in diameter. The density of valence electrons in copper is roughly 9 × 1028 m−3. Find the drift speed of these electrons. Answer in units of m/s.
7. ### Chemistry

Earth's oceans have an average depth of 3800 m, a total area of 3.63 108 km2, and an average concentration of dissolved gold of 5.8 10-9 g/L. (a) How many grams of gold are in the oceans?
8. ### Chemistry 101

A 16 Gauge wire has a diameter of 0.0508 inch. Calculate the length in meters of a 5.00 pound spool of this wire. The density of copper is 8.92g cm^-3
9. ### physics

A copper wire that has a diameter of 2.9 mm carries a current of 39.0 A. Assuming that each copper atom contributes one free electron to the metal, find the drift velocity of the electrons in the wire. The molar mass of copper is 63.5 …
10. ### 9th grade physical science

the density of copper is 8.92g/cm^3. If you plotted the mass of copper in grams versus the volume in cubic centimeters, what would the slope of the line be?

More Similar Questions