Answer: Option (5) is the correct answer.
Explanation:
An ionic bond is formed by transfer of electrons between the two chemically combining atoms. Whereas a covalent bond is defined as the bond formed by sharing of electrons between the two chemically combining atoms.
When electronegativity difference is from 0.0 to 0.4 then bond formed between the two atoms is non-polar covalent in nature.
When electronegativity difference is greater than 0.4 and less than 1.7 then bond between the two atoms is a polar covalent bond.
When electronegativity difference is 1.7 or greater than the bond formed is ionic in nature.
Therefore, electronegativity difference of the given species is as follows.
Si-P = 2.1 - 1.8 = 0.3
Si-Cl = 3.0 - 1.8 = 1.2
Si-S = 2.5 - 1.8 = 0.7
Thus, we can conclude that given bonds are placed in order of increasing ionic character as follows.
Si-P < Si-S < Si-Cl
Answer:
D :)
Explanation:
Cells die and the new cells that are being produced are replaced by new living cells. (If cell division prevented cancer, we'd all be saved by now.)
Answer:
The pressure 10,000 m below the surface of the sea is 137.14 MPa.
The density 10,000 m below the surface of the sea is 2039 kg/m3
Explanation:
P0 and ρ0 are the pressure and density at the sea level (atmosferic condition). As the depth of the sea increases, both the pressure and the density increase.
We can relate presure and density as:
Rearranging
With this equation, we can calculate P at 10,000 m below the surface:
The density at 10,000 m below the surface of the sea is
Volume of a sphere = 4/3 x pi x r^3
When put a fraction of volume constant 4/3 x pi cancels out.
So only cube of radii remains.
Radius of proton = 10^-15 m (Fact; remember it)
Radius of total Hydrogen atom = 0.529 × 10^−10 m
Fraction of Volumes : R'^3/R^3 = (R/R)^3
Fraction = ((10^-15)/(0.529 × 10^−10m.))^3= (1/52900)^3 =
6.755 x 10^-15
<span>Uranium has an atomic weight of 238.03 g/mol.
We have 1.32x10^20 atoms of uranium.
We must convert this to moles by dividing Avogadro's number 6.022x10^23 atoms/mol.
(1.32x10^20atoms)/(6.022x10^23atoms/mol)
2.19x10^-4moles of Uranium
Now multiply this by the atomic weight of Uranium.
2.19x10^-4mol*238.03g/mol
Grams of Uranium = .0522g</span>
