<span>random urine specimen is a common sample
</span>
<em>what</em><em> </em><em>are</em><em> </em><em>the</em><em> </em><em>terms</em><em> </em><em>that</em><em> </em><em>need</em><em> </em><em>to</em><em> </em><em>be</em><em> </em><em>defined</em><em> </em><em>?</em>
A and B only because O2 and CO2 do not have dipole moments
Answer:
8 Silicon atom are present in unit cell.
16 oxygen atoms are present unit cell.
Explanation:
Number of atoms in unit cell = Z =?
Density of silica = tex]2.32 g/cm^3[/tex]
Edge length of cubic unit cell = a = 0.700 nm =
Molar mass of Silica =
Formula used :
where,
= density
Z = number of atom in unit cell
M = atomic mass
= Avogadro's number
a = edge length of unit cell
On substituting all the given values , we will get the value of 'a'.
1 silicon is 2 oxygen atoms. then 8 silicon atoms will be 16 oxygen atoms.
Hydrogen bonding occurs when hydrogen is bonded to an oxygen or nitrogen or fluorine atom. In this case, the hydrogen atom in a hydrogen fluoride molecule will be able to bond to the fluoride atom of another hydrogen fluoride molecule, forming a hydrogen bond.