(1) Consider the following pairs of substances. Think about the physical behavior of these substances if each pair were placed together in a separate container. Explain what would occur for each set and why. In each case, indicate which substance is more dense. a) Salad oil and vinegar b)Gasoline and water c) Oil and water d) Water and ice cubes e) Water and liquid mercury f) A hydrogen filled balloon and the atmosphere (2) Compute the number of moles of helium (He) gas contained in a 22.4 L size container at 1.00 atm pressure and a temperature of 273 K. Use .0821 L atm/mol K for the gas constant R.