Activity 2: Predicting and preventing corrosion ( 30 minutes) An old wooden sailboat is held together with iron screws, and has a bronze propeller (copper alloy containing 7-10\% tin). Using the Eovalues are given in the Table, answer the following: (a) Write down the half-reactions for the oxidation (corrosion) of each metal. (b) If the boat is immersed in seawater, with iron screws in contact with the bronze propeller, predict which corrosion reaction will occur, based on your part (a). Assume the cathodic reaction is \#5. Write both half reactions, and the redox reaction, to show how you came to your conclusion. Activity 3: Mobile phone: energy and emissions ( 30 minutes) The embodied energy of a mobile phone is approximately 400Md. When charging, the charger consumes about 1 Watt. If the phone is used for 2 years, and is charged for 4 hours every night, calculate: The mobile phones are manufactured in Shanghal, China, and transported to Perth, Australia. The distance from Shanghai to Perth by sea is approximately 8878km, and direct flights travel 7040km, and takes 11hr30min. The carbon footorint for transport is given below: 2 If the phones are shipped inlots of 10,000 , what is the carbon footprint per shipment