Aluminum-lithium alloys have been developed by the aircraft industry to reduce the weight and improve the performance of its aircraft. A commercial aircraft skin material having a density of 2.55 g/cc is desired. Compute the concentration of Li in wt% that is required. Density of Li and Al are 0.534 and 2.71 g/cc. * 0.0154 O 1.54 O 20.94 O 35.1124

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