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.
The time a clavicle fracture takes to heal is variable; affected by age, health, type and location of the break. Adult fractures typically take a minimum of 3-4 weeks of sling immobilization to allow the bone and soft tissue to heal. It will be 6 weeks before returning to manual work or sports.Children take less time and can often achieve the same healing in only two weeks.he time a clavicle fracture takes to heal is variable; affected by age, health, type and location of the break. Adult fractures typically take a minimum of 3-4 weeks of sling immobilization to allow the bone and soft tissue to heal. It will be 6 weeks before returning to manual work or sports.