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Does it take more energy to heat the water to 100 degrees Celsius or to boil it?
q (heat energy in Joules) = mass * specific heat * change in temp 1st problem: q = (100 g H2O)(4.180 J/gC)(100 C - 50 C) = 20900 Joules ---------------------- 2nd problem: q = (100 g H2O)(4.180 J/gC)(70 C - 60 C) = 4180 Joules --------------------- As you can see from 50 C to 100 C takes much more heat energy as one would intuitively think, 20900 J/4180 J = 5 times as much energy.
At standard conditions on the celsius scale water will boil at what?
At standard conditions, water will boil at 100 degrees Celsius.
How long does it take for the water to start boiling At what temperature does the water boil?
The time it takes for water to start boiling depends on factors like the heat source, the amount of water, and the container. Water boils at 100 degrees Celsius (212 degrees Fahrenheit) at sea level, where the atmospheric pressure is around 1 atmosphere.
What is Water absorption coefficient formula?
If the water is not already at boiling temperature, then you will need equations 1 and 2. If the water is already at boiling temperature, you will only need equation 2.1. Q = m X C X ΔTThis equation is used to calculate how much energy is required to change the temperature of a given object, of given mass, by a given number of degrees.Q = the total amount of energy required, in joulesm = mass, in grams, of the object being heated (in this case, the water)C = the specific heat of the object (for water, 4.186)ΔT = the total change in temperature2. Q = 2.257 joules X mThe 2.257 in this equation is the heat of vaporization of water: that is, the amount of energy, required per gram of water, to boil water: 2.257 joules per gram. If you were using this equation for a different substance, you would have to look up its heat of vaporization, and substitute it in this equation.Q = the amount of energy required, in joulesm = mass, in grams, of the waterFor example, suppose you were asked to calculate how much energy it would take to boil 256 grams of water which is currently at 40 degrees Celsius. We know that the boiling temperature of water is 100 degrees Celsius; therefore the change in temperature, ΔT, is 100 - 40, which equals 60. Calculate as follows:Q = 256 grams X 4.186 X 60°CQ = 64296.96 joulesThis is how much energy it will take to raise the temperature of the water from 40°C to 100°C. Now calculate how much energy it will take to boil the water once it reaches 100°C:Q = 2.257 joules X 256 gramsQ = 577.792 joulesWe now take the energy required to raise the temperature of the water from 40°C to 100°C and add it to the energy required to boil the water:64296.96 joules + 577.792 joules = 64874.752 joulesConvert to kilojoules:64875.752 joules / 1000 = 64.875752 kilojoulesRound to 64.88 kilojoules.If you are required to express your answer in scientific notation, then express it as6.488 x 103 kilojoules.
Why cant a machine be 100 percent efficent?
The question is a little vague, but if I understand correctly, you're asking why a machine doesn't release as much energy as you put in to it. The reason for this is that energy is very unpredictable. For instance, if you add 1000 W into an electric kettle, not all the energy will go into heating the water. Some of the energy gets lost in the wires, some of the released heat might go into the air, some of the water might boil, etc. The same thing applies for all other machines.
Does it it take more energy to heat the water to 100 degrees celsius or boil it?
If by "boil" you mean have it all evaporate, that takes MUCH more energy. For example, to increase the temperature of one gram of water from 20 to 100 degrees Celsius, you need 4.2 joules/gram/degree times 80 degrees = about 336 joules; then, to evaporate all the water, you need an additional 2257 joules.
How much energy does a light take?
In a house, usually 100 watts approx
How much energy does it take to boil 100 mL of water (Refer to table of constants for water.)?
100 mL × × × 40.65 kJ/mol = 226 kJ
How long does it take to boil an egg at 200 degrees Celsius?
Water evaporates at 100 so it would not be possible to boil an egg at 200
How long does it take to boil 100 ml of water in a Bunsen burner?
8.30 minutes
Does it take more energy to heat the water to 100 degrees Celsius or to boil it?
q (heat energy in Joules) = mass * specific heat * change in temp 1st problem: q = (100 g H2O)(4.180 J/gC)(100 C - 50 C) = 20900 Joules ---------------------- 2nd problem: q = (100 g H2O)(4.180 J/gC)(70 C - 60 C) = 4180 Joules --------------------- As you can see from 50 C to 100 C takes much more heat energy as one would intuitively think, 20900 J/4180 J = 5 times as much energy.
How many minutes does it take to boil salt water?
Salt water will boil at 108 degrees Celsius, so getting it to the boil will take 8% longer under the exact same circumstances as when you heat it to 100 degrees. How much time it will take in minutes depends on how high you will turn up the fire, if you will put a lid on the pan, whether you turn up or down the heat halfway etcetera.
How long does a 1.7L kettle of 3kW take to boil?
To calculate the time it takes for a 1.7L kettle with a 3kW power rating to boil water, we can use the formula: time = energy required / power. The energy required to heat 1.7L of water from room temperature (about 20°C) to boiling point (100°C) is approximately 670 kJ. Given that 3kW equates to 3 kJ/s, it would take about 37 minutes to boil. However, in practical terms, it usually takes around 5-7 minutes for a kettle of this size and power to boil water.
When does water freeze and boil Celsius?
Freeze=0 Boil=100
What temperatere does water freeze and boil at?
Freeze : 0 Boil : 100
How long does it take to boil tar?
It depends on how much energy you are putting into the tar such as 100 degrees Celsius. Look up the specific heat of tar and its chemical composition
How many GJ does it take to boil a cup of water?
The specific heat of water is 4,179 J/g.For a cup of 250 mL the energy is:250 x 4,179 x 100 = 104 475 J = 0,104 GJ.
