Which properties are characteristic of metalloids?

a. high electrical conductivity and a high melting point
b. low electrical conductivity and a low melting point
c. intermediate conductivity and a high melting point
d. intermediate conductivity and a low melting point

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final