<h2>Orderly Internal Arrangement of Atoms</h2>
Explanation:
- Crystals have an orderly internal arrangement of atoms arranged in a lattice pattern.
- Crystalline structure is generally known as an ordered arrangement of the particles like ions, molecules, or atoms that are placed altogether in a three-dimensional space of a lattice.
- The repeating pattern is known as a unit cell of the structure which is the smallest group of particles of the whole crystal structure.
Answer:
d = 7.9 g/mL
Explanation:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
Symbol:
The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.
Given data:
Mass of brown metal = 14.2 g
Volume = 1.8 mL
Density = ?
Solution:
d = m/v
d = 14.2 g/1.8 mL
d = 7.9 g/mL
<u>Answer:</u> The percentage yield of 
is 90.26%.
<u>Explanation:</u>
The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:
......(1)
Given mass of 
= 80 g
Molar mass of = 100 g/mol
Plugging values in equation 1:
For the given chemical equation:
By the stoichiometry of the reaction:
If 1 mole of produces 1 mole of
So, 0.8 moles of will produce = 
of
Molar mass of = 44 g/mol
Plugging values in equation 1:
The percent yield of a reaction is calculated by using an equation:
......(2)
Given values:
Actual value of = 35.2 g
Theoretical value of 
= 39 g
Plugging values in equation 2:
Hence, the percentage yield of is 90.26%.
