Answer:
Argon
Explanation:
Argon is a noble gas and has a full outer shell of electrons so it doesn't need to form bonds with other atoms as it is stable
<span>2 KClO3(s) → 3 O2(g) + 2 KCl(s)
</span><span>Note: MnO2 (Manganese Dioxide) is not part of the reaction. A catalyst lowers the activation energy and increases both forward and reverse reactions at equal rates.
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molar mass of KClO3 = 122.5
Moles of KClO3 = 3.45 / 122.55 = 0.028
Moles of O2 produce =

= 0.042 moles
molar mass of O2 = 32
so, mass of O2 = 32 x 0.042 = 1.35 g
Answer:
c
Explanation:
iodine is the answer.please mark me as brianlist.
Magnetism is inversely proportional to distance
this means that if distance increases magnetic attraction force decreases
i didn’t mean to put this opps