Question

Convert the following temperature to Celsius scale:
(I) 300K
(II) 573K

Answer 1

Hint: The temperature scales that are generally used include Fahrenheit, Celsius and Kelvin scales. But Kelvin is the SI unit of temperature and is used to report scientific data.

Complete step-by-step solution:
> Fahrenheit, Celsius and Kelvin scales are generally used to measure the temperature.
> For the Fahrenheit temperature scale, 32$ ^{ o }{ F }$ is the freezing point of water and 212$ ^{ o }{ F }$ is the boiling point of water. Between this range, 180 equal parts are present. It was designed by the 18th-century German physicist Daniel Gabriel Fahrenheit.
> Until the 1970s the Fahrenheit temperature scale was very popular in English-speaking countries while in most other countries the Celsius (centigrade) scale was employed along with reporting for scientific purposes all over the world.
> For the Celsius temperature scale (centigrade temperature scale) 0$ ^{ o }{ C }$ denotes the freezing point of water while 100$ ^{ o }{ C }$ denotes the boiling point of water. It was invented by the Swedish astronomer Anders Celsius in 1742.
> The Kelvin temperature scale is used for the measurement of thermodynamic temperature in the International System (SI) of measurement. “It is defined as 1/ 273.16 times the triple point (equilibrium among the solid, liquid, and gaseous phases) of pure water”. The kelvin (symbol K) is the fundamental unit of the Kelvin scale. It is an absolute temperature scale named after the British physicist William Thomson, 1st Baron Kelvin. This scale’s point zero signifies absolute zero which is the theoretical temperature at which the molecules of a substance have the lowest energy. Since it is an absolute scale therefore it has been adopted as the international standard for scientific temperature measurement. Both the Kelvin scale and the Celsius scale are related with each other. One temperature can be converted into the other by using the formula:
$The\quad temperature\quad in\quad \quad Kelvin=273.15+\quad The\quad temperature\quad in\quad _{}^{ O }{ C }$
We can use the above formula in order to solve the given question. Therefore by using the above formula:
(I) 300K=26.85$ ^{ o }{ C }$
(II) 573K=299.85$ ^{ o }{ C }$

Note: Generally the 273.15 is written as 273 only in the formula since the calculations become much easier in order to solve the numerical where we need to use the SI units.