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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 ΔT
This 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 joules
m = 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 temperature
2. Q = 2.257 joules X m
The 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 joules
m = mass, in grams, of the water
For 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°C
Q = 64296.96 joules
This 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 grams
Q = 577.792 joules
We 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 joules
Convert to kilojoules:
64875.752 joules / 1000 = 64.875752 kilojoules
Round to 64.88 kilojoules.
If you are required to express your answer in scientific notation, then express it as
6.488 x 103 kilojoules.
What else can I help you with?
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What is the value of linear absorption coefficient for Gold?
The linear absorption coefficient for gold depends on the wavelength of the incident light. At a typical visible wavelength of around 550 nm, gold has a linear absorption coefficient of approximately 5.5 x 10^5 cm^-1.
What is a linear absorption coefficient by using He-Ne laser?
The linear absorption coefficient is a measure of how much a material absorbs light at a specific wavelength. It is typically expressed in units of cm^-1. By using a He-Ne laser, which emits light at a specific wavelength of 632.8 nm, one can measure the absorption of a material at that particular wavelength to determine its linear absorption coefficient.
What is absorption coefficients?
Absorption coefficients measure how well a material absorbs energy (such as light, sound, or radiation) at a given frequency. Higher absorption coefficients indicate stronger absorption of the energy by the material. They are commonly used in various scientific fields to understand the interactions between materials and energy.
What is absorption coefficient of Aluminum?
The absorption coefficient of aluminum typically depends on factors such as the thickness of the aluminum and the wavelength of the incident radiation. In general, aluminum has good optical transparency in the visible spectrum but absorbs strongly in the ultraviolet and infrared regions. Its absorption coefficient can vary from near-zero to high values depending on these factors.
How do you calculate absorption coefficient of water?
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Sabine formula for reverberation of time?
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What is the absorption coefficient of concrete?
Absorption coefficient of concrete for what? For sound waves, mechanical vibrations, radiation, etc... Next question is for what energy? Coefficient if a function of energy rather than a constant.
What is an absorption coefficient?
An absorption coefficient is a measure of the absorption of electromagnetic radiation as it passes through a specific substance - calculated as the fraction of incident radiation absorbed by unit mass or unit thickness.
What is absorption coefficient of iron?
The absorption coefficient of iron depends on the specific conditions, such as the wavelength of the incident radiation or the form of iron being used. In general, iron has a moderate absorption coefficient, meaning it can absorb a significant amount of radiation but may not be as efficient as some other materials. Measurements must be taken under specific conditions to accurately determine the absorption coefficient for a given application.
What is the value of linear absorption coefficient for Gold?
The linear absorption coefficient for gold depends on the wavelength of the incident light. At a typical visible wavelength of around 550 nm, gold has a linear absorption coefficient of approximately 5.5 x 10^5 cm^-1.
How does a coefficient in front of a formula affect the number of each type of atom in the formula?
A coefficient in front of a formula represents the number of molecules or formula units. It applies to all the atoms within that molecule or formula unit. For example, in the formula 2H₂O, the coefficient '2' means there are two water molecules, resulting in a total of 4 hydrogen atoms and 2 oxygen atoms.
What is a linear absorption coefficient by using He-Ne laser?
The linear absorption coefficient is a measure of how much a material absorbs light at a specific wavelength. It is typically expressed in units of cm^-1. By using a He-Ne laser, which emits light at a specific wavelength of 632.8 nm, one can measure the absorption of a material at that particular wavelength to determine its linear absorption coefficient.
What is absorption coefficients?
Absorption coefficients measure how well a material absorbs energy (such as light, sound, or radiation) at a given frequency. Higher absorption coefficients indicate stronger absorption of the energy by the material. They are commonly used in various scientific fields to understand the interactions between materials and energy.
What is absorption coefficient of Aluminum?
The absorption coefficient of aluminum typically depends on factors such as the thickness of the aluminum and the wavelength of the incident radiation. In general, aluminum has good optical transparency in the visible spectrum but absorbs strongly in the ultraviolet and infrared regions. Its absorption coefficient can vary from near-zero to high values depending on these factors.
The number placed in front of a chemical symbol or formula is called?
The number placed in front of a chemical symbol or formula is called a coefficient. It represents the number of molecules or formula units in a chemical reaction.
What is the kind of material through which light passes easily?
Materials like glass, air, and water are transparent and allow light to pass through easily. These materials have a low absorption coefficient and a high transmission coefficient for light.
