This question can not be answered because KO2 is not an existing chemical compound and the probable mistaken compound K2O (potassium oxide) does not produce free oxygen (O2) in a normally possible chemical reaction.
The most basic thing to do first would be to put it under cool running water for at least 15 minutes. During that time you or someone helping you should contact a doctor or other emergency assistance if guidance for the hazardous substance suggests that.
Physical activities lasting for more than 2 minutes
It's an hour and ten minutes.
4 minutes 30 seconds !
1000 seconds.
00:04 ~your welcome :/
Q
the answer is 00:28
0:04
1 hour and 45 minutes
00:04 ~your welcome :/
90 minutes
90 minutes
Minimum, or also minutes
usually 54 to 99 minutes. minimum.
Frequency
At a minimum, do moderate intensity activity for 30 minutes most days, or preferably every day.