1. Scharakteryzuj ogniwa odwracalne i nieodwracalne. 2. Opisz budowę i działanie elektrochemicznych źródeł energii.
3. wyjaśnij, co to jest korozja. Opisz proces korozji chemicznej i elektrochemicznej.
4. Podaj metody zabezpieczania metali przed korozją.
5. Wyjaśnij zjawisko pasywacji glinu.

What is the h+ concentration for an aqueous solution with poh = 4.01 at 25 ∘c? express your answer to two significant figures and include the appropriate units.

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?