Question

Aluminum foil used for storing food weighs about 0.3 g per square inch. How many atoms of aluminum are contained in one square inch of the foil?

Answer 1

Answer:

The number of atoms of aluminum contained in one square inch of the foil=6

Explanation:

Interpretation:

The number of atoms of aluminum contained in one square inch of the foil is to be calculated.

Concept introduction: relation to calculate a number of atoms contained in one square inch of the foil is given by:

 NA/c=mNA/AA1

Where,

M=mass of aluminum

NA= Avogadro's number

AA= Atomic mass of aluminum

Given :

Mass of aluminum foil=0.3 g

M= 0.39g

Relation to calculate a mass of atoms contained in one square inch of the foil is given by:

NA/c= mNA/AA1

M= Mass of aluminum

NA= Avogadro's number

AA= Atomic mass of aluminum

Since,

Avogadro's number

=6