Two moles of N2 at 30.5°C and 5.00 bar undergoes a transformation to the state described by 120°C and 3.22 bar. Calculate AS (J/K) if Cp,m=30.81Jmol-¹K-1. Please enter your answer with one decimal place, for example: 15.2

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The pressure-volume diagram for a pure substance (M=50 kg/kmol) is shown below. Use the phase diagram shown below to estimate density and molar volume of substance at critical point. P (MPa) 5 4 2 1 2 4 6 0.091 kg/m³, 550 m³/kmol 0.167 kg/m³, 300 m³/kmol 0.250 kg/m³, 200 m³/kmol 0.059 kg/m³, 850 m³/kmol 500 K 405 K 8 10 V (m³/kg) 12 14 620 K 16 18 20

A high-altitude balloon contains helium, whose molar mass is 4.00 g/mol. At theballoon’s maximum altitude, its volume is 792 m3 and the outside temperatureand pressure are -53.0 °C and 5.00 kPa, respectively. Assume that the helium in theballoon is in equilibrium with the outside air temperature and pressure.(a) Use the ideal gas law to find the amount of helium in the balloon at maximumaltitude.(b) Assuming no loss of helium, what would be the volume of the balloon when itwas launched from the ground, where the air temperature and pressure are 20.0°C and 101 kPa, respectively?(c) If the volume of the balloon when it was launched was 65.0 m3, how many molesof helium were lost during the balloon’s ascent?