25cm³ of barium hydroxide, Ba(OH) 2 is neutralised by 40cm³ of hydrochloric acid of concentration 2 mol dm¯³. Determine the concentration of the barium hydroxide solution.

Why is an elements atomic mass not listed as a whole number on the periodic table

If equal masses of the listed metals were collected , which would have a greatest volume ? a. aluminum 2.70,b. zinc7.14,c. copper 8.92,d. lead 11.34

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust