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If you have the heat of formation of a substance at a given temperature how do you calculate its heat of formation at a different temperature?
Wiki User
∙ 11y ago
Say u know heat of formation at temperature Ta
and u want to calculate it at a temperature Tb
Delta H(at Tb) = Delta H(at Ta) + integral of (Heat capacity) from Ta to Tb
Wiki User
∙ 11y ago
To calculate the heat of formation of a substance at a different temperature, you can use the heat capacity of the substance to adjust for the change in temperature. You would need to integrate the heat capacity over the temperature range to determine the change in enthalpy and then correct the heat of formation using this adjusted value.
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How do you calculate heat energy when you know volume and temperature?
To calculate heat energy when you know volume and temperature, you would need to use the formula Q = mcΔT, where Q is the heat energy, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature. Given volume, you would also need to know the density of the substance to calculate the mass.
Can kinetic energy move from a substance at one temperature to a substance at a a different temperature?
Yes, kinetic energy can transfer between substances at different temperatures through the process of heat transfer. Heat will flow from a substance at a higher temperature to a substance at a lower temperature until they reach thermal equilibrium.
When heating two substance with same heat the temperature raises on two substance are different why?
The temperature rise of a substance when heated is determined by its specific heat capacity, which is the amount of energy required to raise the temperature of a given amount of the substance by 1 degree Celsius. If the two substances have different specific heat capacities, then they will exhibit different temperature rises when subjected to the same amount of heat energy. This means that even with the same input of heat energy, one substance may experience a greater temperature increase than the other.
What is thermal energy a transfer of?
Thermal energy is a transfer of kinetic energy from the movement of particles in a substance to another substance or area at a different temperature. This transfer causes the receiving substance to heat up and increase in temperature.
How are temperature and thermal energy different?
Temperature is a measure of the average kinetic energy of the particles in a substance, while thermal energy is the total kinetic energy of all the particles in a substance. Temperature is a single value that does not depend on the mass of the substance, while thermal energy is directly proportional to the mass of the substance.
The movement of thermal energy from a substance at one temperature to a substance at a different temperature is called?
heat
At a given temperature and pressure the physical state of a substance is determined by?
At a given temperature and pressure, the physical state of a substance is determined by its phase diagram, which shows the relationship between temperature, pressure, and the state of the substance (solid, liquid, gas). The phase diagram provides the conditions at which the substance transitions between different states, such as melting or boiling points.
How do you calculate heat energy when you know volume and temperature?
To calculate heat energy when you know volume and temperature, you would need to use the formula Q = mcΔT, where Q is the heat energy, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature. Given volume, you would also need to know the density of the substance to calculate the mass.
What is the temperature at which a substance change from a solid into a liquid?
This temperature is called melting point and is different for each substance or material.
Can kinetic energy move from a substance at one temperature to a substance at a a different temperature?
Yes, kinetic energy can transfer between substances at different temperatures through the process of heat transfer. Heat will flow from a substance at a higher temperature to a substance at a lower temperature until they reach thermal equilibrium.
When a substance changes into a different substance a what change has occurred?
Chemical change.
What best describes the enthalpy of formation of a substance?
The energy change that happens when a substance forms from its elements (APEX)
The temperature at which a substance changes from a liquid to a solid is named?
This temperature is called freezing point and is different for each substance or material.
The temperature at which a substance changes from a solid to a liquid is calleld what?
This temperature is called melting point and is different for each substance or material.
What are the six characteristics of a chemical change?
1. evolution of a gas 2. change in colour of the substance 3. change in temperature of the substance 4. formation of precipitate
How many BTUs in 650 degrees F?
there is no conversion from temperature to BTU unless you know the mass and specific heat of a substance at a certain temperature. Then you could calculate the BTU required to heat the substance from a known starting temperature up to an ending temperature.
When heating two substance with same heat the temperature raises on two substance are different why?
The temperature rise of a substance when heated is determined by its specific heat capacity, which is the amount of energy required to raise the temperature of a given amount of the substance by 1 degree Celsius. If the two substances have different specific heat capacities, then they will exhibit different temperature rises when subjected to the same amount of heat energy. This means that even with the same input of heat energy, one substance may experience a greater temperature increase than the other.
