HELP! what's the kPa?

What does the symbol (–hfus) indicate in a phase change?

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.