LEARNATHON
III

Competition for grade 6 to 10 students! Learn, solve tests and earn prizes!

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Theory:

The temperature at which the pressure and volume of a gas theoretically reach zero is called absolute zero.
Screenshot 2021-08-09 141744.png
Variation of pressure with temperature
  
At a temperature of \(–273.15\) \(°C\), the pressure extrapolates to zero for all gases.  It is called n as absolute zero or \(0\) \(K\). Some baseline temperatures in the three temperature scales are shown below.
 
Temperature
Kelvins
(\(K\))
Degree celcius
(\(°C\))
Degrees Fahrenheit
(\(°F\))
Boiling point of water\(373.1\)\(100\)\(212\)
Melting point of ice\(273.1\)\(0\)\(32\)
Absolute zero\(0\)\(-273\)\(460\)
 
We can convert the values from one unit to another unit by using the formula,
 
a) Convert \(30\)\(°C\) to \(Kelvin\)
 
Solution:
 
TK=T°C+273.15TK=30+273.15TK=303.15K
 
b) Convert \(240\) \(K\) to \(°C\)
 
T°C=T°K273.15TK=240273.15TK=33.15K