What mass of ice can be melted by adding 2538 J of heat?

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins