What happens when a current is applied to two electrodes immersed in pure water?

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .