Question

Convert

$\left(i\right)$ $273{}^{\circ }C$ to Kelvin

$\left(ii\right)$ $293K$ to ${}^{\circ }C$.

Answer 1

Conversions of temperature scales:

The relationship between $K$ and ${}^{\circ }C$

$T_K=T_C+273$

($T_K=$ Temperature in Kelvin;
$T_C=$ Temperature in celsius)

$\left(i\right)$ $T_K=T_C+273$

$T_K=273+273$

$\therefore T_K=546K$

$\left(ii\right)$ $T_C=T_K+273$

$T_C=293-273$

$\therefore T_C={20}^{\circ }$