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These are some hints that will help you to answer
your questions:
- Experiment
- Step 1
Measure 100 mL of water and pour it into an empty soda can. Suspend the thermometer in the water using Sticky Tack in the lip to hold it in place. The thermometer should not touch the bottom or sides of the can. This device is called a calorimeter.
- Step 2
Cut the other soda can 1 or 2 inches from the bottom. Throw away the top. Measure the mass of the bottom of the soda can. Measure the mass of the candle, and place it in the bottom of the soda can.
- Step 3
Check the temperature of the water. Light the paraffin candle and, holding your calorimeter with the tongs, move it over the burning paraffin just high enough so there is enough oxygen to keep the fire burning. Be careful not to touch the can or burn yourself.
Calculations - Step 4
Watch the thermometer and note the temperature when the candle stops burning. Measure the mass of the candle in the bottom of the soda can and subtract the mass of the bottom of the soda can as measured in Step 2.
- Step 1
Subtract the final candle mass from the initial candle mass to calculate the total mass burned. Subtract the initial temperature from the final temperature to measure the change in temperature.
- Step 2
Assume 1 mL of water equals one gram; therefore, this experiment used 100 grams of water, and it takes 4.18 Joules (J) to raise 1 gram of water 1 degree Celsius. Multiply the grams of water by the change in temperature by 4.18 J to measure the total thermal energy it took to bring the temperature to its highest point in Joules.
- Step 3
Divide the the thermal energy created by mass (in grams) of the candle that were burned to calculate the heat of combustion of paraffin wax expressed in J/g.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoabout 11,000 kJ/mol! for somebody in HIS chemistry class! good luck with your discussion Trial 1: 11383.68KJ/mol Trial 2: 10866.24KJ/mol
Wiki User
∙ 9y agoThe heat of vaporization of paraffin wax is not available, however the heat of fusion is 200 - 220 J g^-1/
Wiki User
∙ 9y agoThe example for this problem wasn't given. The molar heat of combustion of candle wax has assumption which is the heat given off by a candle which equals heat that is captured in the water.
Wiki User
∙ 13y agoNobody Knows. There as never been a scientific test to prove any theroys however, it is believed to be about 150c.
Wiki User
∙ 12y ago~507 g/mol
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Molar Enthalpy of Candle Wax C25H52?
-1308.3 kJ
How does heat combustion of paraffin compare to heat combustion of propane?
how does the heat of combustion of propane compare to the heat of combustion of paraffin wax
Why does the wax not freeze at the top of a candle?
wax do not freeze on top of the candle because the heat on top of the candle makes it melt and as we know heat makes solid melt.
What burns on a candle the wick or the wax?
the wick Burns but it produces heat that melts the wax
Why candle wax produces more heat than alcohol?
Candle wax contains paraffin which melts quickly after it touches fire. And the paraffin also can hold more heat
How do you know that the burning of candle of wax is an exothermic change?
An exothermic reaction involves the release of heat into a system. The burning of a candle is combustion reaction. Combustion reaction release heat, and this can be detected and measured by the burning of a candle's wax. From these testable observations it is determined fact that candle burning is indeed exothermic.
What energy is stored in the wax of a candle?
It is potential energy inside the candle and wick and then made into light and heat energy by combustion
Molar Enthalpy of Candle Wax C25H52?
-1308.3 kJ
How does heat combustion of paraffin compare to heat combustion of propane?
how does the heat of combustion of propane compare to the heat of combustion of paraffin wax
Why does the wax not freeze at the top of a candle?
wax do not freeze on top of the candle because the heat on top of the candle makes it melt and as we know heat makes solid melt.
What are the products of the combustion of candle wax?
carbon(from the smoke), CO2 and heat. water and carbon dioxide
Why when you burn a candle the mass decreases?
Maybe a better question is whether a candle AND it's combustion products gets heavier or lighter. Since a candle uses the oxygen from the air, the total mass gets heavier than the original candle.
What wax is in a candle?
carbon dioxide and water if there is not enough oxygen in the air when it burns, then it is called incomplete combustion. a colourless, odourless, poisonous gas carbon monoxide can be formed, as well as the much more common carbon (soot)
A paraffin wax candle is used to heat up a can of water. The candle had a mass of 15.75g before the burn and 14.20g after the burn The can contained 250.0 of water at an initial temperature of 13.0 C?
A paffin wax candle is used to heat up a can of water. The candle had a mass of 15.75g before the burn and 14.20g after the burn. The can contained 250.0 of water at an initial temperature of 13.0 C. What is the heat of combustion in kJ/g of paraffin? The specific heat capacity of water is 4.184 J/(g C)
What burns on a candle the wick or the wax?
the wick Burns but it produces heat that melts the wax
Why candle wax produces more heat than alcohol?
Candle wax contains paraffin which melts quickly after it touches fire. And the paraffin also can hold more heat
Why do candle wax and wick both disappear when they are burnt?
They are both Consumed in the process called Combustion.
