Answer:
A solution
Explanation:
Mainly because a solution is a mixture of chemically bonded elements.
The number of protons in the nucleus determines the atomic number of an element.
Every element has its own characteristic atomic number.
The answer is C potential energy to kinetic energy.
Answer:
The density of Lithium β is 0.5798 g/cm³
Explanation:
For a face centered cubic (FCC) structure, there are total number of 4 atoms in the unit cell.
we need to calculate the mass of these atoms because density is mass per unit volume.
Atomic mass of Lithium is 6.94 g/mol
Then we calculate the mass of four atoms;
![= 4 .atoms*\frac{1.mole}{6.022 X10^{23} .atoms} *\frac{6.94g}{mole} = 4.6097 X10^{-23} g](https://tex.z-dn.net/?f=%3D%204%20.atoms%2A%5Cfrac%7B1.mole%7D%7B6.022%20X10%5E%7B23%7D%20.atoms%7D%20%2A%5Cfrac%7B6.94g%7D%7Bmole%7D%20%3D%204.6097%20X10%5E%7B-23%7D%20g)
⇒next, we estimate the volume of the unit cell in cubic centimeter
given the edge length or lattice constant a = 0.43nm
a = 0.43nm = 0.43 X 10⁻⁹ m = 0.43 X 10⁻⁹ X 10² cm = 4.3 X 10⁻⁸cm
Volume of the unit cell = a³ = (4.3 X 10⁻⁸cm)³ = 7.9507 X 10⁻²³ cm³
⇒Finally, we calculate the density of Lithium β
Density = mass/volume
Density = (4.6097 X 10⁻²³ g)/(7.9507 X 10⁻²³ cm³)
Density = 0.5798 g/cm³