At which electrode does oxidation occur in a
voltaic cell and in an electrolytic cell?
(1) the anode in a voltaic cell and the cathode in
an electrolytic cell
(2) the cathode in a voltaic cell and the anode in
an electrolytic cell
(3) the anode in both a voltaic cell and an
electrolytic cell
(4) the cathode in both a voltaic cell and an
electrolytic cell

Does the energy in a solid increase or decrease when changing to a liquid?

Hannah is writing a report on how albedo affects the global climate. she’s proofreading her passage for any factual errors. which sentence must hannah correct before submitting her report? earth receives energy from the sun. this energy drives many of the processes on earth, including its climate. some part of this energy is reflected by earth’s surface. we use the term albedo to describe the reflected energy. albedo of an object is the ratio of the reflected radiation to the total radiation reaching the object. a value of 0 means no energy is absorbed by the object, whereas a value of 1 means that all of the energy is absorbed. in this way, the albedo of an object can influence earth’s atmospheric temperature.

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.