# Problem: A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride: 2 Li + F2 ➔ 2 LiF After the reaction is complete, what will be present? a) 2.16 moles lithium fluoride only b) 0.789 moles lithium fluoride only c) 2.16 moles lithium fluoride and 0.395 moles fluorine d) 0.789 moles lithium fluoride and 1.37 moles lithium e) none of these answers is correct

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A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride:

2 Li + F2 ➔ 2 LiF

After the reaction is complete, what will be present?

a) 2.16 moles lithium fluoride only

b) 0.789 moles lithium fluoride only

c) 2.16 moles lithium fluoride and 0.395 moles fluorine

d) 0.789 moles lithium fluoride and 1.37 moles lithium

e) none of these answers is correct

What scientific concept do you need to know in order to solve this problem?

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Based on our data, we think this problem is relevant for Professor Grant's class at HUNTER.