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

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.

Answeramino acids;