4. Using Mendeleev's system elements with similar properties fell into families or groups.

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.

Iam in desperate need of with this !

‘which reaction would most likely require the use of an inert electrode?