Question

in 93 grams of phosphorus calculate - number of atoms and number of molecule

Answer 1

given mass=93
molar mass=31
no. of mole =given mass/molar mass
=93/3 =3moles
no. of molecules= mole ×Na
=3×6.023×10^23
3×6×10^23 =18×10^23 molecules
no. of atoms=atom /atomicity
= 6.023×10^23 × 4
= 24×10^23 atoms.

Hope it helps you.

Answer 2

given mass=93

molar mass=31

no. of mole =given mass/molar mass

=93/3 =3moles

no. of molecules= mole ×Na

=3×6.023×10^23

3×6×10^23 =18×10^23 molecules

no. of atoms=atom /atomicity

= 6.023×10^23 × 4

= 24×10^23 atoms.