Josh does a demonstration during lecture where he inflates a balloon made from very thin, flexible rubber with a mixture of Neon and Argon gas. The mixture has molar mass 27.5 g/mol. The mass of the balloon's rubber is low enough that it can be ignored in what follows. Recall that the molar mass of air is about 29 g/mol. 3.1. The gas in the balloon first comes into equilibrium with the air in the lecture hall so that its temperature and pressure are approximately equal to the temperature and pressure of the lecture hall air. The temperature in the lecture hall air is about 75F. In this equilibrium state, what is the ratio of the buoyant force on the balloon to the weight of the air inside the balloon? 3.2. Josh then puts the balloon in a refrigerator and closes the door. The pressure of the air in the refrigerator is approximately the same as the pressure of the air on the outside, but the temperature on the inside is lower. Josh keeps the fridge door shut for long enough that the temperature of the gas in the balloon is roughly equal to the temperature of the air in the fridge. He then takes the balloon out, and immediately puts the balloon on a scale. The scale indicates that the balloon has zero weight. What is the Fahrenheit temperature inside the fridge? Please help me answer 3.1 and 3.2 I'm confused and do not know where to start