Q = [ mI ] [ h sub sf + CshW ( 100.0 C - 0.0 C ) + h sub fg ]
Q = [ 25 g ] [ 333.7 J /g + ( 4.184 J / g - C ) ( 100.0 C ) + 2257 J / g ]
Q = [ 25 g ] [ 3009.1 J / g ] = 75230 J <---------
ANSWER : 75230 J
13,98 kJ are necessary.
The latent heat for water to steam is 550 calories (2310 Joules) per gram. For 2 grammes, double these figures.
Steam at 105 c
You need o know the initial temperature of water:Heat = specific heat x difference of temperature x mass of water
Steam at 100C
steam is more effective because the particles of steam have absorbed extra energy in the form of latent heat of vaporization apparent temp is 100c and actual temp is more than 100c whereas the actual temp of water is 100c
5x2260, so 11,300 J or 11.3 KJ
The latent heat for water to steam is 550 calories (2310 Joules) per gram. For 2 grammes, double these figures.
Steam at 105 c
You need o know the initial temperature of water:Heat = specific heat x difference of temperature x mass of water
Steam at 100C
Steam at 100C
Water boils into steam at 100C or 212F at sea-level pressure.
Anything greater than or equal to 212F (100C). Superheated steam used in steam locomotives, steam turbines in power plants, etc. can be any temperature from 500F to 2000F depending on the design of the system.Note: if you can see the "steam" it is not steam. What you see are tiny droplets of liquid water that have condensed from the steam and is probably exactly at 212F (100C) because it is in thermal equilibrium with the invisible steam at the same temperature.
As you probably already know, water boils at 212F (100C). This only applies when at sea level with an atmospheric pressure of 14.7psia. To raise the boiling point all you need to do is raise the pressure. In a steam plant where steam is used to drive turbines, the water is pressurized by heating it in an enclosed system. As the water turns to steam, the steam has no where to escape and the pressure in the enclosed system begins to rise. As the pressure rises so does the boinling point. Some plants will raise the temperature to 500F which corresponds to a pressure of about 620psi.
steam is more effective because the particles of steam have absorbed extra energy in the form of latent heat of vaporization apparent temp is 100c and actual temp is more than 100c whereas the actual temp of water is 100c
It can be anywhere in between 60C and 100C (boiling point).
Water or steam at 100 degrees Celsius will kill some bacteria. Detergent or soap is needed to kill the ones that survive the hot temperatures.