Please answer and explain

1. Calculate u : v mean speed v(rms) : v root mean-square speed *: v most probable U( rel) z and 2 ...for ethylene, C2H4(g) at 298. K and 100. kPa (2 pts each). Assume that o = 0.64 nm2. Sketch a graph of the velocity distribution and label the speeds that you have determined. 2. Consider the isothermal expansion of 2.50 mol of a sample of oxygen gas that follows the Van der Waal's equation of state. Calculate the final volume and work done if the gas undergoes reversible expansion from 25 kPa and 3.25 L to a final pressure of 75 kPa