Two minerals that contain Cu are CuFeS_(2) and Cu_(2)S. What mass of Cu_(2)S would contain the same mass of Cu as is contained in 125 lb of CuFeS_(2)?

Two minerals that contain Cu are CuFeS_(2) and Cu_(2)S. What mass of C

1.	Two minerals that contain Cu are CuFeS_(2) and Cu_(2)S. What mass of Cu_(2)S would contain the same mass of Cu as is contained in 125 lb of CuFeS_(2)?
Answer» ANSWER :54.2 LB