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.
How long does it take to recover from a collarbone fracture? Clavicle fractures should heal completely within 12 weeks. but Usually with a broken collarbone the pain and swelling are severe. How long it takes the fracture to heal depends upon many factors Some fractures can take six to nine months to heal.