The melting point of helium is -269.65°C, and the boiling point is -268.93°C.
I have to convert these to K I get 3.5 and 4.22
When I plug these in it saYs i am within 10% of the answer I don;t no what else to put?
They want answers that are correct to within 0.01 K. You should subtract -273.15 from the C temperatures to get K.
This converts to 3.50 K and 4.22 K, which are your answers
You are much closer than 10%.