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Scientists use the Kelvin Scale (K) as an alternative temperature scale to degrees Celsius \((^\circ C)\) by the relation \(T^\circ = (T + 273) K\).
 
Convert the following to kelvin:
 
(i) \(-275^\circ C\) \(=\)  \(K\)
 
(ii) \(45^\circ C\) \(=\)  \(K\)
 
(iii) \(-400^\circ C\) \(=\)  \(K\)
 
(iv) \(-273^\circ C\) \(=\)  \(K\)