This is no Calculus...
Picometer is equal to 10-12 metres.
Centimeter is equal to 10-2 metres.
Calculate using normal chemistry.
543pm * (10-2 meters/10-12 meters) = 5.43x10-8 centimeters
Simply cube that and you get roughly 2.6x10-7 cm3
It's free, the whole earth is covered with silicon
SiO2, or silicon dioxide forms a flat tetrahedral with a bond angle of 144 degrees. The bond length between the silicon and oxygen atoms is 1.60 Angstroms.
The SiS2 molecule is linear. First, establish a Lewis structure; the Silicon atom forms the center of the structure, which the two Sulfur atoms bond to. In order to satisfy the octet rule and establish neutral formal charges, double bonds form between each Sulfur atom and the Silicon. This configuration creates two electron domains from the two double bonds; single, double and triple bonds all form one electron domain each. Since there are no sets of un-bonded paired electrons, the system only has two electron domains, both of which formed from bonds. This leaves only one possible shape, which is linear.
That is the NASDAQ symbol for shares of Silicon Motion Technology Co.
silicon (IV) oxide or silicon dioxide has giant covalent structure
You calculate the total amount of whatever it is that you want to find the silicon abundance for. Then you calculate the amount f silicon in that. Then percentage abundance of silicon = 100*amount of silicon/total amount Typically the amount would be measured as the mass.
Look down at the link "Atomic structure of silicon atoms". There you will find the atomic structure of silicon atoms.
Because they have different properties.
The chemical formula of silicon dioxide is SiO2; SiO2 has many forms of crystalline structure.
Carbon and Silicon.
It does not alter the atomic structure of the silicon at all, what it alters is the balance of bulk valence band and conduction band electrons in the crystal of silicon thus altering its bulk conductivity.