. A high-pressure system (H) is moving to the southeast as shown on the weather map. Cold air is usually found north and west of a high-pressure system. Warm
air is to the south and east of the front. Continental air is drier while oceanic air
has more moisture.
H Н
FL
Based on this information, what is the best prediction for weather on the day
after the system passes the point marked X?

that tool would be a compass

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

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