What is required for gas to be soluble in water?

Which of these is the result of scientific research and not engineering? a. a new shoe design that features air cushioning for more comfort and protection b. the creation of glass with uv protection. c. a conclusion about diet commonalities among diabetics. d. the development of a smaller, more compact missile.

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

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