Question

How do you convert $ - {27^o}C$ to ${\text{K}}$?

Answer 1

Hint: The temperature given is in Celsius and the conversion is asked in Kelvin. Zero degree Celsius is equal to the ${\text{273}}{\text{.15 K}}$ one that needs to convert this value accordingly using this relation. One must remember that the degree Celsius value given is negative.

Complete step by step answer:
1) First of all, we will understand the terms Celsius and kelvin which can give the relationship formula between them. Celsius and Kelvin are both temperature measurement scales that are used for different purposes.
2) Now let us see the relationship formula for this reaction which can give the conversion between these two scales as below,
${\text{Kelvin = Celsius + 273}} \cdot {\text{15}}$
3) Now let us see the $ - {27^o}C$ to ${\text{K}}$ conversion by putting the known value of Celsius as below,
${\text{Kelvin = }}\left( { - 27} \right) + 273 \cdot 15$
Now let us do the subtraction as the Celsius value is negative as below,
${\text{Kelvin = }}273 \cdot 15{\text{ }} - {\text{ }}27$
Now by doing calculation we get,
${\text{Kelvin = 246}} \cdot {\text{15 K}}$
Therefore, the conversion of $ - {27^o}C$ to ${\text{K}}$ gives us the Kelvin value as ${\text{246}} \cdot {\text{15 K}}$.

Additional information: While converting the Kelvin value to the Celsius value we can get that by using the following formula as below,
${\text{Celsius = Kelvin - 273}} \cdot {\text{15}}$
One should remember to calculate the value according to negative and positive signs and convert them accordingly. When subtraction is done the final value gets the sign of the biggest value.

Note:
Celsius scale is the international agreement in terms of two fixed points. The ice point temperature is ${0^o}C$ and the steam point is ${\text{10}}{{\text{0}}^o}C$. The Kelvin term is the thermodynamic temperature scale. Kelvin divides the scale of Celsius between the ice and steam points where one kelvin shows the same temperature interval as one Celsius degree.