Answer
We add the temperature in Celsius to 273.15 to obtain temperature in Kelvin:
(a) 45 + 273.15 = 318.15
(b) -28 + 273.15 = 243.15
(c) 230 + 273.15 = 503.15
Work Step by Step
We add the temperature in Celsius to 273.15 to obtain temperature in Kelvin:
(a) 45 + 273.15 = 318.15
(b) -28 + 273.15 = 243.15
(c) 230 + 273.15 = 503.15