Hi,
-15c is ice, and above 100 there is steam. So you need to supply enery for 5 things:
1. To raise the temp of the ice from -15c to 0c.
2. To convert the ice from 0c to water at 0c. (latent heat)
3. To raise the temp of the water from 0c to 100c.
4. To convert the water at 100c to steam at 100c (latent heat).
5. To raise the temp of the steam from 100c to 110c.
I believe you can continue now on your own (I can't draw graphs here). If you still have difficulties I'll help you (please let me know).
Best regards,
