Answer
(a) 388.36 K
(b) 310. K
(c) 630. K
Work Step by Step
Recall: Temperature in Kelvin
= (Temperature in degree celcius+273.15)
(a) $115.21^{\circ}C=(115.21+273.15)K=388.36\,K$
(b) $37^{\circ}C=(37+273.15)K=310.\,K$
(c) $357^{\circ}C=(357+273.15)K=630.\,K$
