If your good at chemistry please help thanks

Word equation for k(s) +h2o(l) yield koh (aq) + h2

Which of the following words describe the reality that the universe looks the same from various perspective

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory