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How long does it take for serious burn to occur with a liquid at a temperature of 140 degrees?
If the liquid is moving, third degree burns (reddened skin) can occur within a few seconds, second degree (blisters) would take a bit longer. Deep tissue damage (first degree burns) would take longer yet, and might not occur at all depending on a number of factors, such as where the heat is applied. In all cases, the location of the heat on the body is a factor. The inside of the upper arm, for example, will suffer damage much faster than the palm of the hand. If you have a water heater with a thermostat, it is a good idea to keep it at about 120 degrees tops. This is hot enough for washing, minimizes the chance of burns, and will save energy. Even with a home diswasher, 120 degrees is hot enough. (Commercial dishwashers require higher temperatures because of the way they function.)
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Does the evaporation of liquid occur only at fixed temperature?
No, evaporation of a liquid can occur at any temperature above its freezing point. However, the rate of evaporation increases as the temperature of the liquid rises.
Can melting and freezing occur at the same temperature in water?
Yes, melting and freezing occur at the same temperature in water, which is 0 degrees Celsius (32 degrees Fahrenheit). At this temperature, water transitions between its solid (ice) and liquid forms without changing its temperature.
Does the evaporation of a liquid occur only at a fixed temperature?
yes
What temperature does star fusion begin to occur?
The minimum temperature is about 10,000,000 degrees Celsius.
What must happen to the temperature of the liquid for vaporization to occur?
The temperature of the liquid must reach its boiling point for vaporization to occur. This is when the liquid molecules have enough energy to overcome the intermolecular forces holding them together and escape into the gas phase.
What is the temperature of liquid carbon dioxide in Fahrenheit?
At standard pressure, CO2 does not occur as a liquid, the solid phase turns directly into a gas. Liquid carbon dioxide only forms at pressures higher than 5.1 atm. The actual boiling point depends on the pressure. At a particular pressure the liquid may have any temperature between the melting and boiling points. At the lowest pressure where it can exist, liquid carbon dioxide would have a temperature of -56.6 degrees C, or -69.88 degrees F. Under normal pressure conditions, carbon dioxide goes from gas straight to solid when the temperature reaches - 78.5 degrees C.
Is it possible for distilled water in liquid form reach a temperature of 105 degrees Celsius. why or why not?
No, distilled water cannot exceed a temperature of 100 degrees Celsius at standard atmospheric pressure because it will boil and turn into steam. Temperatures above this point indicate the water is transitioning from a liquid to a gaseous state.
When a puddle evaporates does that mean the water reaches 100 degrees?
No, water can evaporate at any temperature, not just at 100 degrees. Evaporation occurs when water molecules gain enough energy to break free from the surface of the liquid and enter the air as vapor.
What is the difference between water's freezing and melting points?
Water's freezing point is the temperature at which liquid water turns into solid ice, which is 0 degrees Celsius. On the other hand, water's melting point is the temperature at which solid ice turns into liquid water, also at 0 degrees Celsius. Both freezing and melting points occur at the same temperature but represent opposite phase changes.
When does boiling point occur?
For water it is 100 degrees celsius, however it is different for other liquids ------------------------- Generally, boiling point is the temperature at which the liquid's vapour pressure is equal to the external atmospheric pressure.
What is different evaporation and vaporization?
Evaporation occur at the surface of a liquid and at any temperature under the boiling point.Vaporization occur only at the boiling point and in the entire volume of the liquid.
Does liquid oxygen occur naturally?
No, liquid oxygen does not occur naturally on Earth. Oxygen exists in a gaseous form in the atmosphere and must be cooled to very low temperatures (-183 degrees Celsius) to become a liquid.
