A solution has [H3O+] = 5.4x10-5 M. Use the ion product constant of water

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j