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.
Restricting the movement of any broken bone is critical to healing. To immobilize a broken collarbone, you'll likely need to wear an arm sling.The length of time immobilization is needed depends on the severity of the injury. Union of the bone usually takes three to six weeks for children and six to 12 weeks for adults.If a baby has suffered a broken collarbone during labor and delivery, healing typically occurs without specific treatment.Pain control and careful handling of the baby are usually all that's needed.nion of the bone usually takes three to six weeks for children and six to 12 weeks for adults. If a baby has suffered a broken collarbone during labor and delivery, healing typically occurs without specific treatment. Pain control and careful handling of the baby are usually all that's needed.