Chlorine melts at 172 k. what is chlorine’s melting point in °c?

Since we know chlorine melts at 172 K, we know this is chlorine's melting point. To convert from kelvin to Celsius, you can subtract 273. Therefore, when you do 172-273 you get -101 Celsius degrees which is the final answer.

I hope this helps.

A3.5 gap gps and your masters degree

Ibelieve the answer is d