Achemical reaction takes place at 20 degrees celsius. what is this temperature in kelvins?

To get the temperature in kelvin, just add 273 to the degrees in celcius. Therefore, 20C would be 293 degrees kelvin. (20+273=293) 

To get the temperature in celcius from kelvin, just subtract 273 degrees from the degrees in kelvin. Therefore, 278K would be 5C. (278-273=5) 

Absolute zero is 0 degrees kelvin or -273C.

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.