When a pendulum is held high and taut and then is released, the pendulum begins to swing what's the correct order of the energytransformations in this example? (pe stands for potential energya. gravitational peelastic pethermal energyb. gravitational pe - kinetic energythermal energyc. kinetic energyelastic pe - thermal energyd. kinetic energy-gravitational pethermal energye. thermal energy - gravitational pekinetic energy

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.