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Q: How much latent heat is required to cause 1lb o water to boil off?
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What does the heat latent heat of vaporization measure?

The energy required to boil a substance


Latent heat of vaporisation decreases as pressure increases and becomes zoro at critical pressure i read . why it so?

As pressure increases the temperature required to vaporize water is less. So with increase in pressure there is decrease in temperature required to boil so latent heat also decreases.


What does the latent heat of vaporization represent?

The amount of energy required to turn a mole of a liquid into a gas


How many minutes are required to boil water at a rolling boil to kill most organisms that are known to cause intestinal disease?

5 to 10 min


How many minutes are required to boil water at a rolling boil to kill most organisms that are known to cause intestinal diseases?

5 to 10 min


What is the latent heat of fusion?

The amount of energy it takes to boil a substance


Why is boiling a good sterilization procedure?

Most microorganisms which cause infections or diseases can't survive at the temperature required to make water boil.


Is it true that in order for water at 60 degrees Fahrenheit to boil it must absorb both sensible and latent heat?

True


What is the definition of the term 'latent heat'?

Latent heat is the amount of energy that is needed to change the state of matter. Either from a solid to a liquid, from a liquid to gas or vice versa. For example if you boil a kettle of water, energy or latent heat is added to the water from the element within the kettle. The water will heat up and eventually turn to steam.


The temperature required to boil water at?

100 degrees Celsius


What cuold cause water to boil into steam?

heat


Why does water boil faster in the mountains than the city?

There is Less atmospheric pressure on a mountain. As pressure goes down, so does the temperature required to boil water.