Liquid nitrogen boils at 77 kelvins. convert this temperature to celsius and fahrenheit

Celsius: Take Kelvin temperature and subtract 273.15
         77-273.15 so the temperature in Celsius would be -196.15.
Fahrenheit: Formula: K*1.8-459.67
First you multiply 77*1.8= 138.6
Then you subtract the 459.67.  138.6-459.67= -321.07
77 degrees Kelvin would be -196.15 in Celsius and -321.07 in Fahrenheit

I hope this helps :)