Question

A jar labeled NaCl contains powder. The table above contains information determined by analyzing a sample of the powder in the labratory. What information in the table is the most helpful in determining whether the powder is oure NaCl?

Answer 1

Mass percent of Na

Step-by-step explanation:

To conclusively prove that a substance is NaCl, we must look at its percentage composition.

There is a standard and known percentage by mass composition of NaCl which has been documented in literature. Every other sample of NaCl is analyzed in comparison to these values of which the purity of the NaCl is a major determinant.

Hence, by considering the percentage by mass of the constituent elements, the purity of a sample of any compound can be conclusively established.