Atoms and Atomic Structure

# What is the atomic weight for copper?

###### Wiki User

###### May 03, 2012 6:29PM

The atomic mass of copper is 63.55 grams per mole.

## Related Questions

###### Asked in Chemistry

### What is molar mass for copper?

###### Asked in Math and Arithmetic, Units of Measure

### How many atoms are in one cubic centimeter of copper?

Here is the process for finding the answer. Weigh one cubic
centimeter of copper on a scale that reports the weight in grams.
Take that weight, in grams), and multiply it by 63.546 (which is
the atomic weight of copper) to get how many gram atomic weights of
copper is in one cubic centimeter of copper. Take that number and
multiply it times Avagadros Number which is the number of atoms in
one gram atomic weight of any element. The resulting number is how
many atoms are in one cubic centimeter of copper. Avagadros Number
is shown below:
6.0221415 × 1023

###### Asked in Atoms and Atomic Structure

### How do you get the atomic weight of brass?

Brass does not have an atomic weight as it is an alloy. An alloy
consisting of Copper (Atomic Weight: 63.546) & Zinc
(Atomic Weight:65.38). This is why there is no Atomic Weight
available for it. Once in a while a comparison of metals requires
commonality. Such as if you were comparing the mass of a Brass item
to say one of Lead (Atomic Weight:207.2). Mixtures of Brass vary
from 5% Zinc to 45%. As you can easily see the weight of both
Copper and Zinc are close in weight, and both are about 1/3 of the
Lead. This would mean that if you were making a weight for say
"skin diving" if you used lead instead of Brass the lead would be
1/3 the size and identical weight.
I hope this had helped you.

###### Asked in Atomic Mass

### Why is the atomic mass of copper not exactly equal to 64 midway between the mass numbers of copper-63 and copper-65?

Because copper has isotopes. All Copper atoms have exactly the
same number of protons, but not all of them have the same number of
neutrons. The ones with different numbers of neutrons are known as
isotopes. A given sample of Copper will contain various amounts of
each of its isotopes. The atomic mass (weight) is an average
weight, based on the percentages of the isotopes