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Calorimeters measure the quantity of heat energy involved in processes such as heating, chemical reactions, changes of state, and mixing of substances. The unit of energy in the International System of Units is the joule. Another unit still being used is the http://www.answers.com/topic/calorie, defined as 4.184 http://www.answers.com/topic/joule. One type of calorimeter contains a combustion chamber surrounded by water. When matter is placed in the chamber and physically or chemically changed (usually by burning), the temperature change of the surrounding water is measured and used to determine the energy (calorie) content of the sample.
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LaoCalorimetry is based on the principle of measuring the heat exchanged between a system and its surroundings to determine the energy content of the system. This is achieved by using a calorimeter, which is a device designed to isolate the system from the surroundings and accurately measure the heat flow. The principle of calorimetry follows the law of conservation of energy, where any heat lost by the system is gained by the surroundings, and vice versa.
This depends entirely on what type of calorimeter you are using. If you are using a bomb calorimeter it works by ignition a spark that burns a sample that you want to know the amount of calories in. This "bomb" causes the water in a tank to heat up and you measure the temperature change in that water for about 45 minutes. Then you use equations to figure out how many calories were burnt based on the temperature change. Temperature change is also the source for many other colorimeters.
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What principle permits calorimetry to be used to determine the specific heat capacity of a substance?
The principle of energy conservation permits calorimetry to be used to determine the specific heat capacity of a substance. This principle states that energy cannot be created or destroyed, only transferred. Calorimetry utilizes this principle by measuring the heat exchanged between substances to determine specific heat capacity.
How would your results in the calorimetry lab be affected by the presence of impurities?
The presence of impurities in the calorimetry lab can affect the accuracy of your results. Impurities can alter the heat transfer process, leading to incorrect measurements of energy changes. This can result in inaccurate calculations of heat capacity and other important values in the experiment.
What is the principle behind microbial calorimetry?
Microbial calorimetry is based on measuring the heat generated or consumed during microbial growth. The principle is that microbial metabolic activities, such as respiration and fermentation, produce heat which can be quantified to determine the metabolic activity of the microbial culture. This method allows for real-time monitoring of metabolic processes and provides insights into the growth kinetics of microorganisms.
What are the six principle of physics?
Principle of conservation of energy Principle of conservation of momentum Principle of relativity Principle of causality Principle of least action Principle of symmetry and invariance
What method is used to measure the amount of heat given off by the body?
The amount of heat given off by the body can be measured using a thermometer or a calorimeter. Skin temperature can be measured using a skin thermometer placed on the body, while the total heat production can be estimated through indirect calorimetry which measures oxygen consumption and carbon dioxide production.
