Urgent! an aqueous solution at ph 9.0 has how many times more free oh- ions than h+ ions? how would you solve this?

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.