Answer:Theoretical density =2.576g/cm³
Explanation:
Theoretical density p= (A×n)/Vc ×Av
A= molecular weight
n= effective number of atoms per unit cell
Vc=Volume of unit cell = a³
Av = Avogadro's constant = 6.02×10²³
Given that A= 87.2g/mol
n= 4 (For FCC crystal structure)
Vc= a³
Where a = 2R√2 and R is the atomic radius
R=0.215
a= 2 × 0.215×√2
a= 0.608nm = 0.608×10^-7 cm
Vc= (0.608×10^-7 cm)³
Vc=2.25×10^-22 cm³
P= (87.2 × 4)/
(2.25×10^-22) × (6.02×10²³)
P= 2.576g/cm³
Therefore the theoretical density of strontium is 2.576g/cm³
Answer:
The answer is below
Explanation:
1. With the aid of natural hues, the fox can change its color based on the environment it found itself in. For example, during summer and spring, fox color changes to dark to provide itself cover in the environment that is characterized by the brown dirt. Similarly, the fox color changes to white during winter and fall to blend with the snow.
2. In a bid to domesticate fox, it has been observed over many generations that the domesticated fox compared to wild fox has floppy ears and curly tails. The stress hormone level has reduced significantly and they possess a smaller adrenal gland.
The answer should be B - Nitrogen Dioxide.
Answer:
the molecular formula of paradichlorobenzene is C6H4CL2
A compound or a mixture.
If it is two or more elements are mixed, it is a mixture. If two or more elements are chemically reacted, it is a compound ( example FeS)
Hope this helps.
