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Ans. 1. Fire extinguisher is a device that is used to put out fire . It ussaly contains chemicals that give me carbon dioxide, foam or any other gases that are helpful to put out the fire.
Ans. 2. Density is defined as the unit volume of the substance . Hence it tells us how closely the molecules are packed. The greater the density the more closely the molecules are packed. If the object is denser than the water it will sink in water and if the object is less denser than the water it will float in the water.

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Fire extinguisher is a device that is used to put out fire . It contains gases that give me carbon dioxide, foam or any other gases
Answer 2
Density is defined by the unit volume of the substance . Hence it tells us how closely the molecules are packed. The greater the density the more closely the molecules are packed. If the object is denser than the water it will sink and if the object is less denser than the water it will float in the water.
Answer 3

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Density is defined as the weight of unit volume of  a substance.Hence,it tells us how closely molecules of the substance are packed

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Density is defined as the weight of unit volume of  a substance.Hence,it tells us how closely molecules of the substance are packed

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REHAN KHAN

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Kritika sinha 5 e                                                           ans 1 - the devices used to put out the fires. they contains chemicals that usally give carbon dioxide gas and help in extinguishing the fire .                       ans 2 - it is defined as the ratio of mass and volume . if the object is less dense it floats and if it is more denser ot sinks . 

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Kritika sinha 5 e                                                           ans 1 - the devices used to put out the fires. they contains chemicals that usally give carbon dioxide gas and help in extinguishing the fire .                       ans 2 - it is defined as the ratio of mass and volume . if the object is less dense it floats and if it is more denser ot sinks . 

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A fire extinguishers is a device that is used to put out fires. It contains chemicals that give out carbon-dioxide or some other gas or foam that puts out the fire by cutting out the supply of air.

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A fire extinguisher is a device that is used to put out fires.It contains chemicals that give out carbon-dioxide or some other gas or foam that puts out the fire by cutting  out the supply of air

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A fire extinguisher is a device that is used to put out fires.It contains chemicals that give out carbon-dioxide or some other gas or foam that puts out the fire by cutting  out the supply of air

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REHAN KHAN

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1 . A fire extinquisher is a device that is used to put out fire. It contains chemicals that usually give out carbon dioxide or some other gases that puts out the fire by cutting out the supply of air.

2. density is defined as the weight of a unit volume of the substance.

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Fire extinguishers are the devices used to put out fires.

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Fire extinguishers are the devices used to put out fires.