2. The alcohol in "gasohol" burns according to the following equation. C2H6O + 3 O2 → 2 CO2 + 3 H2O

(a) If 12.3 moles of ethyl alcohol burns this way, how many moles of oxygen are needed?

36.9 moles

Explanation: According to reaction equation, amount of Oxygen

moles are three times of amount of ethanol.

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the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.