Gold has an atomic weight of 196.97 g/mol, and a density of 19.3 g/cm3. approximately how many atoms are in a spherical gold nanoparticle 10 nm in diameter?

The number of atoms in spherical gold nano particle are

Explanation:

where,

r = radius of the sphere =    (Conversion factor:   )

Putting values in above equation, we get:

Volume of gold =

Density of gold =

Putting values in above equation, we get:

Mass of gold =

Molar mass of gold = 196.97 g/mol

Putting values in above equation, we get:

1 mole of an element contains  number of atom

So, moles of gold will contain = number of atoms.

Hence, the number of atoms in spherical gold nano particle are

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year