Given the reaction: Ca(s) + Cu2+(aq) - Ca2+(aq) + Cu(s) What is the correct reduction half-reaction?
1.
Cu2+ (aq) + 2e - Cu(s)
2.
Cu2+(aq)
-
Cu(s) + 2e
3.
Cu(s) + 2e - Cu2+ (aq)
4.
Cu(s) - Cu2+ (aq) + 2e-

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Give the orbital configuration of the phosphorus (p) atom.

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.