4Al + 302 → 2A1,03
5. If 3.17 g of aluminum, Al, is allowed to react with 2.55 g of Oz, how many grams of
aluminum oxide will be produced? (Hint: Must determine limiting reactant.)
(molar mass Al = 26.98, molar mass O2 = 32.00, molar mass Al2O3 = 101.96)

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds

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.