abhibhambhani
10.07.2019 •
Chemistry
When copper crystallizes, it forms face-centered cubic cells. the unit cell edge length is 361.5 pm. calculate the density of copper in g/cm3?
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Ответ:
Density of copper can be calculated using the following formula:
Here, m is mass and V is volume, thus, to calculate density first calculate mass and volume of copper.
In FCC, number of atoms in a unit cell are 4, atomic mass of Cu is 63.546 g/mol and number of atoms in 1 mole is .
Mass of Cu will be:
Now, volume can be calculate as:
Here, a is edge length.
First convert edge length from pm to cm
Thus,
Putting the value,
Now, from mass and volume density can be calculated as follows:
Therefore, density of copper will be .
Ответ:
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