Question 21 1 pts
5H2O2(aq) + 2 MnO4 (aq) + 6H+(aq) --> 2Mn2+(aq) + 8H2O(l) + 5O2(g)
In this reaction, which element is being oxidized and what is the element's change in oxidation
number?
O Oxygen, which changes from 0 to -2.
O Oxygen, which changes from 1 to 0.
O Manganese, which changes from -1 to +2.
O Manganese, which changes from +7 to +2.
1 pts
Question 22

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

the answer is c

tell me if wrong