Which of the following describes a gas

Aluminum–lithium (al-li) 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 2.47 g/cm3 is desired. compute the concentration of li (in wt%) that is required.

Ineed with a, b, c, d, and e on the long answer

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.