A student scientist closes up an empty soda bottle and attaches a pressure gauge to the top. The initial room temperature is 20.7 °C and the bottle has a starting pressure of 0.98 atm. Ignoring safety advice about never putting lab equipment into the microwave, they throw it in and heat up the bottle for a minute. If the pressure gauge survives this risky experiment what do you predict the pressure will be, in atm, after the air inside is heated up to 80.4 °C? Don’t forget to convert all temperatures to Kelvin before doing any calculations.

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

answerleaving cheese out to get moldy;