The chemical formula for lithium fluoride is lif . a chemist determined by measurements that 0.035 moles of lithium fluoride participate in a chemical reaction. calculate the mass of lithium fluoride that participates.
Explanation: From the periodic table: molar mass of Li = 6.941 grams molar mass of F = 18.998 grams Therefore: molar mass of LiF = 6.941 + 18.998 = 25.939 grams/mole
number of moles can be calculated as follows: number of moles = mass / molar mass We have: number of moles = 0.035 moles molar mass = 25.939 grams/mole
Substitute in the equation to get the mass as follows: 0.035 = mass / 25.939 mass = 0.035 * 25.939 = 0.907865 grams
