Calculate the pressure in atm exerted by 1.39 moles of unknown gas kept in a vessel of volume 6.09L at 55°C.

How much heat is released upon converting one mole of steam (18.0 g) from 100.0 ∘c to water at 25.0 ∘c? show work and constants, trying to figure out how it works. only given the heat capacity for steam and water so try to only use that

Idon’t know how to solve this question

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change