Before going further, show the camera the front and back of…

Before going further, show the camera the front and back of the printed equation sheet (if you have it) and any blank scratch paper you will be using.   Which one of the following correctly describes the origin of permanent electronegative charge on 2:1 type silicate clays? 

The family of drugs known as Lidocaine are popular local ane…

The family of drugs known as Lidocaine are popular local anesthetics. Lidocaine blocks transmission of pain by binding to neuron Na+ channels and preventing Na+ ions from being able to travel through the channels. Considering the information you have compiled above, hypothesize the effect lidocaine has on the rate of neuron depolarization. Be sure to discuss why this change to depolarization would be an effective way to block pain. For full credit, your answer should be in full sentences and clearly discuss how you arrived at this conclusion.