How many seconds are in 209.7 ms?
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Ответ:
0.21 seconds
Explanation:
Just because it is and how science works
Ответ:
K in KClO2 = +1
Cl in KClO2 = +3
O in KClO2 = -2
K in KCl = +1
Cl in KCl = -1
O in O2 = 0
Chlorine is going from +3 to -1 so it is being reduced
Oxygen is going from -2 to 0 so it is being oxidized
Explanation:
Potassium is a constant +1
Chlorine could be -1, +1, +3, +5, or +7
Oxygen can be either -2 or +2
Every reactant has to equal zero if there is not a given charge.
Each element can only have certain charges, for example in the previous answer K = +5. Potassium can only be the charge of +1