What was pangaea? explain your answer

The earliest form of the connected continents.

Explanation:

Pangaea refers to the ancient connection of all the continents before the movement of tectonic plates created the 7 continents we have today. It gives us the diversity we have today, as early life could travel across lands that are no longer connected, allowing the spark of life to set aflame the whole earth rather than the orgin spot of Northern Africa.

Hope this helps.

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