You have a solution for which the hydronium ion concentration is 4.5 x 10–4 m. what is the concentration the hydroxide ion, oh– in this solution at 25°c?

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

Why protons do not repal in the nucleus

Astream of surface water reaches a porous portion of sediment and seeps into the ground. this water eventually joins a large reservoir of water located beneath the earth's surface. the example above describes the interacting with the a. cryosphere; biosphere b. hydrosphere; biosphere c. hydrosphere; geosphere d. cryosphere; geosphere