Â­. Â­Dry ice is frozen carbon dioxide. A block of dry ice has a surface temperature of -109.3 degrees Fahrenheit (-78.5 degrees C). Dry ice also has the very nice feature of sublimation -- as it breaks down, it turns directly into carbon dioxide gas rather than a liquid.
The time for a broken collarbone to fully heal depends on the severity of the injury. In children, complete healing may take as little as three to six weeks. In adults, six to 16 weeks or more are often necessary for a collarbone to heal solidly.
A broken collarbone, or fractured clavicle, is a common injury. It usually happens after a fall or a blow to the shoulder. It takes about six to eight weeks to heal in adults, and three to six weeks in children.The collarbone, or clavicle, is a long slender bone that runs from the breastbone to each of the shoulders.owever, it will take at least the same period again to restore full strength to your shoulder. While the fracture heals, a lump may develop along the collarbone. This is normal and often improves over the following months. Occasionally, the fracture doesn't heal (non-union) and you may need to have surgery.