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 required for a broken collarbone to heal depends on the severity of the injury. More severe fractures that cause the bones to be significantly out of position or result in an overlap of the broken bone fragments may require surgery to properly reposition them and promote healing.nswer: Collarbone (clavicle) fractures usually heal quite well, and most do not require any surgical intervention. But it's not uncommon for a visible bump or bulge to remain at the fracture site after the bone has mended.