Given: Va= 25.0 mL of 0.250M nitric acid is the sample volume. 0.225M KOH is used in the buret for titration. Find: Vt of KOH needed to neutralize the acid.
1HNO3 + 1KOH → 1H2O + 1KNO3

A__ is two or more substances that are together in the same place but are not chemically combined

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )