Chlorine gas contains two chlorines that are held together by a bond which is the best classification for chlorine gas.? a. atom b. molecule c. element d. compound

Explanation:

An atom is smallest unit of a matter or substance.It consist of three subatomic particles : electrons, protons, neutrons.

Element is a pure substance which is composed of atoms of similar elements.  Example: Hydrogen (H).

Molecule is a pure substance formed by combination of atoms of similar elements called as molecule of element. Example: Hydrogen molecule , Chlorine molecule

The combination of atoms of different elements is called as molecule of compound. Example: Water

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.  Example: Water

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

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