Achemist is studying an unknown substance. he can break it into its elemental components only by using chemical means how should the unknown substance be classified

Explanation:

An element is defined as a substance that contains same type of atoms.  An element can never be broken down into its constituent particles.

For example, a spoon made up of only copper metal will contain only atoms of copper.

A compound is defined as a substance in which atoms chemically combine together in a fixed ratio by mass.

For example, is a compound.

A compound can be broken down into its constituent particles by chemical means.

therefore, we can conclude that given unknown substance be classified as compound.

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole