Tectonic plates that pull away from each other create a boundary

Why is nh3 classified as a polar molecule

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

What natural processes produce large quantities of co2