(a) Write the possible oxidation and reduction half-reactions that occur when magnesium is immersed in each of the following solutions:
(i) HCl, (ii) an HCl solution containing dissolved oxygen, (iii) an HCl solution containing dissolved oxygen and, in addition, Fe2+ ions.
(b) In which of these solutions would you expect the magnesium to oxidize most rapidly?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Determine the length of the object shown. 97.8 mm 97.80 mm 97 mm 98 mm

Match each state of matter with the statement that best describes it.