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What is the symbol that denotes the heat transferred by the water in the calorimeter?
Wiki User
∙ 12y ago
In chemistry the transfer of heat (H) in reactions is illustrated by the Greek letter delta in front of H (ΔH). Heat can be released into the system (exothermic) or absorbed from it into the reaction's product.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoCalorimetry refers to the process of determining the changes in energy of a system by measuring the heat exchanged with the surroundings. A triangle usually denotes the heat transferred by the water in the calorimeter.
Wiki User
∙ 7y agoTotal heat is usually represented by the capital letter Q. A differential amount of heat is usually represented with a lower case letter q. When we are talking "specific heat", i.e. energy per unit mass or per mole, we usually add a carat ^ above the q.
Wiki User
∙ 8y agoA chemical equation is defined as the short-hand representation of a true chemical reaction with the help of symbols and formula.when heat is absorbed reaction is endothermic .The heat is represented by a triangle which is called delta in a chemical equation.
Wiki User
∙ 11y agoa triangle with the base at the bottom
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What is the importance of wiping the ice dry before introducing it to the water in the calorimeter and how would it affect the outcome of the experiment?
The specific heat of water is different from the specific heat of ice and so 'wet ice' into a calorimeter experiment can increase the mass of water in the calorimeter and become a source of unaccuracy.
A 0.48g sample of graphite is placed in a bomb calorimeter with an excess of oxygen The water and calorimeter are at 25 c The graphite is ignited and burned and the water temperature rises to 28.05c?
-392.5 kJ/mol
Function of calorimeter?
A bomb calorimeter is a type of constant-volume calorimeter used in measuring the heat of combustion of a particular reaction. Bomb calorimeters have to withstand the large pressure within the calorimeter as the reaction is being measured. Electrical energy is used to ignite the fuel; as the fuel is burning, it will heat up the surrounding air, which expands and escapes through a tube that leads the air out of the calorimeter. When the air is escaping through the copper tube it will also heat up the water outside the tube. The temperature of the water allows for calculating the calorie content of the fuel.[ or kilojoules if using those units]
What is the purpose of the water trap in determining the latent heat of vaporization of water?
to prevent water from entering the calorimeter and allow only the gas.
Why the brass need to be immersed in the boiling water before place it in the calorimeter?
The brass needs to be immersed in the boiling water for a sufficient enough time that its temperature is the same as the boiling water, 100 degrees Celsius. That will be the initial temperature of the brass. After it is quickly placed in the calorimeter which will contain much cooler water, causing the brass to cool down and the water to heat up until the point where the temperature no longer changes. At that point the temperature of the brass is the same temperature as the water in the calorimeter, which is its final temperature of the brass.
A metal object with mass of 19g is heated to 96 Celsius then transferred to calorimeter containing 75 grams of water at 18 Celsius It reaches a temperature of 22 Celsius What is the specific heat?
What is the significance of symbol aq in a compound?
The aq denotes that water is present. Latin word Aqua means water.
What is the importance of wiping the ice before introducing it to the water in the calorimeter?
The specific heat of water is different from the specific heat of ice and so 'wet ice' into a calorimeter experiment can increase the mass of water in the calorimeter and become a source of unaccuracy.
In calculating the heat given off by a reaction in a calorimeter you must account for heat absorbed by?
Water and the Calorimeter.
Why did you need to transfer the metal quickly from the hot water bath to water in the styrofoam cup calorimeter?
You need to stir the water because the heat energy coming off whatever you put into the calorimeter (whether it be food, metal, etc.) won't evenly distribute its heat throughout the water, and therefore the temperature reading won't be as accurate. If you stir it, the heat will be more evenly "mixed in" with the water, so to speak, and you will get a more accurate reading.
What is the importance of wiping the ice dry before introducing it to the water in the calorimeter and how would it affect the outcome of the experiment?
The specific heat of water is different from the specific heat of ice and so 'wet ice' into a calorimeter experiment can increase the mass of water in the calorimeter and become a source of unaccuracy.
A 0.48g sample of graphite is placed in a bomb calorimeter with an excess of oxygen The water and calorimeter are at 25 c The graphite is ignited and burned and the water temperature rises to 28.05c?
-392.5 kJ/mol
Why is water an excellent material to use in a calorimeter?
Water is an excellent material to use in a calorimeter because it has a very high specific heat, making it very hard for water to raise its temperature even by 1 degree celsius, but as hard as it was to raise the temperature of the water, it is equally as hard to lower the temperature of the water-making it able to effectively retain heat and allowing the other material inside of the calorimeter to absorb that heat.
Why would you test pure water in a calorimeter to find the concentration of protein in a solution?
test the pureity of water
What does a calorimeter use the increase in water temperature for?
Measure the heat given up to the water by another substance
Function of calorimeter?
A bomb calorimeter is a type of constant-volume calorimeter used in measuring the heat of combustion of a particular reaction. Bomb calorimeters have to withstand the large pressure within the calorimeter as the reaction is being measured. Electrical energy is used to ignite the fuel; as the fuel is burning, it will heat up the surrounding air, which expands and escapes through a tube that leads the air out of the calorimeter. When the air is escaping through the copper tube it will also heat up the water outside the tube. The temperature of the water allows for calculating the calorie content of the fuel.[ or kilojoules if using those units]
What is the purpose of the water trap in determining the latent heat of vaporization of water?
to prevent water from entering the calorimeter and allow only the gas.
