The density of solid w is 19.3 g/cm^3. how many atoms are present per cubic centimeter of w?
atoms cm^3

as a solid, w adopts a body-centered cubic unit cell. how many unit cells are present per cubic centimeter of w?
unit cells/cm^3

what is the volume of a unit cell of this metal?
cm^3

what is the edge length of a unit cell of w?

Atoms present per cm³ of Ag =

Unit cells which are present per cubic centimeter of W =

Volume =

Edge length =

Explanation:

Given that:-

The density of the solid W = 19.3 g/cm³

Molar mass of W = 183.84 g/mol

So, Moles present per cm³ of Ag = =0.105 mol/cm³

Also, 1 mole = atoms.

So,  

Atoms present per cm³ of Ag =

Thus, answer =

In BCC, the number of atoms  in the unit cell = 2

So,

Unit cells which are present per cubic centimeter of W =

Unit cells which are present per cubic centimeter of W =

The reciprocal of the unit cell/cm³ is the volume of the unit cell.

So,

Volume =

Also, Volume =

Thus, edge length = =

Edge length =

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )