Q2. The figure below shows the lead-tin phase diagram. a) For a composition of 40% tin (the dashed line), draw the expected phases present at points 1, 2 and 3. [2 marks] b) List the phases present in the phase diagram [1 marks] c) At the eutectic temperature isotherm (183C) : a. What is (are) the phases present [1 marks] b. What is (are) the composition of the phase(s)? [2 marks] c. What is (are) the phase amounts of each phase (in mass fraction)? [2 marks]