# physics

How much paraffin oil would be needed to heat the same volume of water?

• Heat capacity of water = 4200 j kg-1 K-1
• Mass of 1 litre of water = 1kg
• Heat value of paraffin = 45M J kg-1
• Density of paraffin = 800kg m -3
• 1 cubic centimetre (1cm3 = 10-6 m3)
• Water Temperature of 20oC

To heat 1 litre of water from 200C to boiling point 1000C

= 80x4200 J = 336KJ

• Energy released from burning 1cm3 of paraffin

=45x800 x 10-6 MJ =36KJ

• Volume of wood needed

=336/36 = 9.33cm3

Just need this checked

1. 👍 0
2. 👎 0
3. 👁 125

## Similar Questions

1. ### chemistry

A solar heating specialist is considering paraffin as a possible solar heat collector. How many kilograms of paraffin would be needed to collect as much energy as 4.73 x 10^3 kg of water? The specific heat of paraffin is

asked by k on January 15, 2012
2. ### chemistry

A solar heating specialist is considering paraffin as a possible solar heat collector. How many kilograms of paraffin would be needed to collect as much energy as 4.73 x 10^3 kg of water? The specific heat of paraffin is

asked by k on January 15, 2012
3. ### chemistry

In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 lb of oil provides 2.2×107J. Part A How many kilograms of oil are needed to heat 110 kg of water from 24 ∘C to 100∘C? (Assume that

asked by john on September 23, 2016
4. ### College Chemistry

The specific heat of a certain type of cooking oil is 1.75 cal/(g·°C). How much heat energy is needed to raise the temperature of 2.83 kg of this oil from 23 °C to 191 °C?

asked by Shannon on September 15, 2015
5. ### Physics

Water with a mass of 1000kg leaves a hose at 20oC and is converted by the heat from the fire into steam at 300oC. List the steps needed in order to determine the amount of heat that is added to the water. For each step show the

asked by Roller coaster Q-7 on May 13, 2014
6. ### Physics

Water with a mass of 1000kg leaves a hose at 20oC and is converted by the heat from the fire into steam at 300oC. List the steps needed in order to determine the amount of heat that is added to the water. For each step show the

asked by Water Q-7 on May 13, 2014
7. ### Physics -- HELP PLEASE

. Water with a mass of 1000kg leaves a hose at 20oC and is converted by the heat from the fire into steam at 300oC. List the steps needed in order to determine the amount of heat that is added to the water. For each step show the

asked by Anonymous on May 13, 2014
8. ### math

The oil burner in a certain house is used to heat the house and to heat the hot water.During the seven cold months when the house is heated, an average of 200 gallons of oil a month is used.In the remaining five months, when the

asked by thomas on April 27, 2014
9. ### Chemistry

In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 pound of oil provides 2.4*10^7 J. How many kg of oil are needed to heat 100 kg of water from 22 to 100 degrees C? How many kg of oil are

asked by Steve on February 6, 2012
10. ### chemistry

Assuming the molor mass of paraffin is 280 g/mol, calculate the # of mols of paraffin burned. Then calculate the heat of combustion of paraffin in kJ/mol I don't think I can help you with the information provided. We need an

asked by dan on September 26, 2006

More Similar Questions