What new substance was made after they were mixed

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

In a copper wire, a temperature increase is the result of which of the following