The inferior alveolar nerve is the larger branch of the posterior division of the mandibular nerve. The inferior alveolar nerve enters the mandibular foramen in the ramus of the mandible (see the image below) to occupy the inferior alveolar canal in the body of the mandible.
The formula for the compound between Lithium and Sulfur is  Li2S because Lithium has a +1 charge while Sulfur has a -2. So for it to be stable, there needs to be two Lithium atoms attached to one Sulfer.
N.B. the 64.130 value is the weight of two sulfurs. Problem #3: A compound is found to have the formula XBr2, in which X is an unknown element. Bromine is found to be 71.55% of the compound. Determine the identity of X. Solution #1: 1) Determine molar mass of XBr2. 159.808 is to 0.7155 as x is to 1.