Answer:
The density of copper is 8.9 grams per cubic centimeter.
Explanation:
There is a writing mistake in statement, correct form is written below:
<em>A 124.6 grams sample of copper has a volume of 14 cubic centimeters. What is the density of copper?</em>
Let suppose that mass of the copper sample is distributed uniformly in its volume, then we shall use the following definition of density (
), in grams per cubic centimeter:
(1)
Where:
- Mass, in grams.
- Volume, in cubic centimeters.
If we know that
and
, then the density of the sample of copper is:
![\rho = \frac{m}{V}](https://tex.z-dn.net/?f=%5Crho%20%3D%20%5Cfrac%7Bm%7D%7BV%7D)
![\rho = 8.9\,\frac{g}{cm^{3}}](https://tex.z-dn.net/?f=%5Crho%20%3D%208.9%5C%2C%5Cfrac%7Bg%7D%7Bcm%5E%7B3%7D%7D)
The density of copper is 8.9 grams per cubic centimeter.
C and D have three significant figures.
Answer:
Silver and copper
Explanation:
Siliver
Electrical conductivity=62000000(s/m)
Boiling point=2162
Melting point=961.78
Phase=solid
Copper
Electrical conductivity=59000000(s/m)
Boiling point =2927
Melting point=1084.62
Phase=soild
Metals like gold, silver and copper are drawn into thin wire and are used in an electric circuit because of their high electrical conductivity
Mostly Siliver and copper are used since using gold is much expensive.
3NaOH + H3PO4 = Na3PO4 + 3H2O
None of the above for both