8.55 amount of pure substance is present in 500 g box of table salt .
The amount of substance is the number of particles that constitute the substance. The particles or entities may be molecules, atoms, ions, electrons, or other.
The number of atoms, molecules or ions in a mole of a given substance is the Avogadro constant. The value of the Avogadro constant is 6.02 x 1023 per mole.
To calculate the amount of pure substance in 500 g box of table salt -
Since,
Amount of pure substance(Mole)=Mass/Molar mass.....(1)
Here,
Mass=500 gms , Molar mass=58.44 gms
Put the values in above,
n=500/58.44
n=8.5 mol
Hence,8.55 amount of pure substance is present in 500 g box of table salt .
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