DENVER—Three teens accused of killing a 20-year-old woman while throwing large rocks at passing cars have been charged with murder and other crimes, prosecutors said Wednesday. Nicholas “Mitch” Karol-Chik, Joseph Koenig, and Zachary Kwak, all 18, each face identical charges of first-degree murder, attempted first-degree murder, second-degree assault, and attempted second-degree assault in the death…