Need Help can someone explain what I have to do? Calculate the Rf value if the solvent moved 11.9 cm and an ink component moved 6.5 cm.

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

i think its 100.

hope this !

5.6⋅10−^19  j

do you need the explaination?