Question 4 An O2 molecule adsorbed at one site on a surface. An oxygen O2 molecule is adsorbed onto a small patch of the surface of a catalyst. It's known that the molecule is adsorbed on 1 of 169 possible sites for adsorption (see sketch at right). Calculate the entropy of this system. Round your answer to 3 significant digits, and be sure it has the correct unit symbol.

The element that has the greatest electronegativity is

Anurse used a 0.02-mg/l solution of disinfection to clean a patients wound. what is the concentration of the solution expressed as a percentage?

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .