Answer:
373.15 K
Step-by-step explanation:
First, let's recall a basic concept.
The boiling point of a substance is the temperature reached by a compound to change it phase from liquid to gaseous phase.
Condensation point is the opposite of boiling, in other word, from gaseous to liquid.
Now, in general terms the average temperature where water boils is at 100 °C and 1 atm.
To convert this temperature to Kelvin all you need to do is apply the following expression:
K = °C + 273.15
Why 273.15? because at -273.15 °C it reachs the absolute zero, that's why we need to take this contribution.
So, the boiling/condensation point of water in Kelvin would be:
K = 100 + 273.15
K = 373.15 K
This expression can be used to convert any temperature from ° C to Kelvin of any substance.