Final answer:
The value of 15 degrees Celsius in degrees kelvin is 288.15K, obtained by adding 273.15 to the Celsius temperature.
Step-by-step explanation:
To convert a temperature from degrees Celsius to kelvin, you add 273.15 to the Celsius temperature. Since you're asking to convert 15 degrees Celsius to kelvin, the calculation would be:
K = °C + 273.15
K = 15 + 273.15
K = 288.15
The value of 15 degrees Celsius in kelvin is therefore 288.15K. Remember that when expressing temperatures in kelvin, the unit symbol 'K' is used without the word 'degree' or the degree symbol (°).