What element on the periodic table is named after the european capital where it was discovered in 1923?

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

What produces wave a)sound b) heats c)transfer of energy d)vibrations

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.