25cm3 of 0.2mol/dm3 barium hydroxide solution reacted with 22.8cm3 hydrochloric acid. Calculate the concentration of the hydrochloric acid in mol/dm3. Ba(OH)2 + 2HCl  BaCl2 + 2H2O

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

What will most likely happen when two bromine atoms bond together?

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean