A painful sore or sores inside your mouth, on the tongue, soft palate (the back portion of the roof of your mouth), or inside your cheeks; Sores in your mouth that are round, white, or grey in colour, with a red edge or border; In severe mouth ulcer attacks, you may also experience: Fever; Physical sluggishness; Swollen lymph nodes; How are mouth ulcers treated? Pain from a mouth ulcer generally lessens in a few days and the sores usually heal without treatment in about a week or two. If sores are large, painful or persistent, your dentist may recommend an antimicrobial mouth rinse, a corticosteroid ointment, or a prescription or non-prescription solution to reduce the pain and irritation.
Tricky question. Water will obviously boil and turn to vapor (steam) at 100 degrees celcius (212 F). But if you heat water to a point below boiling, you can see it giving off steam. The temperature at which that happens is not fixed;it varies with the ambient temperature and humidity.
U.K. and european heating systems should be pressurized to between 1 and 1.5 bar - cold. 20 psi is typical for U.S. / Canadian residential heating systems normal hot operating temperature, up to just under 30 psi, depending on the high-limit temperature setting on the boiler limit control.