4. Consider the reaction of gold(III) ion with iron metal to produce metallic
gold and aqueous iron (II) ions. Eau= +1.52V
(a) Write the balanced half reaction for the oxidation.
(b) Write the balanced half reaction for the reduction.
(c) Write a balanced overall reaction
(d) What is the standard voltage Eº for this electron transfer

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

The three types is stress that act on earths rocks are compression, tension, and