Final answer:
The surface temperature of the sun in Kelvin scale is 5.50 x 10^3 + 273 K.
Step-by-step explanation:
The temperature of the surface of the sun is given as 5.50 x 10^3°C. To convert this temperature to the Kelvin scale, we need to add 273 to the Celsius value. Therefore, 5.50 x 10^3°C in Kelvin scale is 5.50 x 10^3 + 273 K.
Learn more about temperature conversion