A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride: 2Li + F2 -->2LiF. After the reaction is complete, what will be present?
2007-01-22 10:40:05 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
First convert the two masses into moles by dividing by their respective atomic/molar masses. You'll then have to determine which of these is the limiting reactant by determining which will give you the fewest moles of LiF. Once you've identified the limiting reactant, you can use stoichiometry to determine what mass of the other reactant will remain and what mass of LiF is produced.
Knowing how to do stoichiometry problems is a very important skill in chemistry. You need to work on it so that it becomes pretty easy for you to do.
2007-01-22 10:51:10 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋