Signs and Symptoms. Because the signs of AS can be similar to those of other behavioral problems, it's best to let a doctor or other health professional evaluate a child's symptoms. Many kids are diagnosed with attention deficit hyperactivity disorder (ADHD) before a diagnosis of AS is made later.
Rubber begins to melt at approximately 180 degrees Celsius. At low temperatures, around 5 C to 6 C, there is a risk that rubber hardens because of crystallization. The optimum temperature for rubber is 20 C.
Material Melting point Latent heat of fusion (kJ/kg)Boiling point Latent heat of vaporization (kJ/kg) Water 0Â°C 335 100Â°C 2272Nitrogen -210Â°C 25.7 -196Â°C 200Oxygen -219Â°C 13.9 -183Â°C 213Ethyl alcohol -114Â°C 108 -78.3Â°C 855 Table 13.3: A table of melting points, boiling points, and latent heats for various materials.he heat needed to melt the ice at 0Â°C.3. The heat needed to raise the liquid water to the boiling point.4. The heat needed to boil the water at 100Â°C. Step 2 â Plot a graph of the temperature of the water as a function of time, starting at t = 0 when the temperature is at â20Â°C.