Assuming you have a pure sample of water, in which answer choice are all values of Kw correctly paired with their corresponding value of pOH? A) Kw = 1.48 × 10−13 B) Kw = 1.43 × 10−14 C) Kw = 1.15 × 10−15 1) pOH = 6.41 2) pOH = 7.47 3) pOH = 6.92 1. A1, B3, C2 2. A3, B1, C2 3. A3, B2, C1 4. A1, B2, C3 5. A2, B1, C3 6. A2, B3, C1

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.