Respuesta :
Answer:
What particle are you counting (atoms, molecules, or formula units) if you use Avogadro's number to count particles of
a) salt (NaCl) ____formula units_______________
b) sugar (sucrose)_________molecules________
c) baking soda (sodium Bicarbonate)_______formula units_______________
Explanation:
Avogadro's Number, unit per mole (mole⁻¹) is factor of the number of particles present in one mole of a substance which may be ions, molecules, atoms or electrons. The Avogadro's number is denoted by NA, and the value of Avogadro's number is 6.02214076 × 10²³.
The Avogadro constant, usually denoted by NA or L is the factor that, multiplied by the amount of substance in a sample, measured in moles, gives the number of constituent particles in that sample. Its unit is the reciprocal of mole, and it is defined as NA = 6.02214076×10²³
For
a) salt (NaCl), the Avogadro's number tells how many formula units of NaCl are present in a mole of NaCl. NaCl is an ionic compound and not a molecule
When the number of formula units present are known, the number of the constituent elements can be ascertained.
b) Sugar, sucrose is a molecule and the Avogadro's number indicates the number of molecules present in a sample of sugar
c) Baking Soda is an ionic compound also measured in formula units.
