If an enclosure of 0.462 L has a partial pressure of O2 of 3.5×10−6 torr at 26 ∘C, what mass of magnesium will react according to the following equation? 2Mg(s)+O2(g)→2MgO(s)
Express your answer using two significant figures.

Well you can immediately rule out a and d because if a metal were to lose or gain protons, then it would become a different element all together. the answer here is b because the positive symbol with a number refers to how many electrons the metal can give away to become stable.

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If ur asking if they question is true or false ur answer would be true