You are asked to prepare 500 ml 0.300 m500 ml 0.300 m acetate buffer at ph 4.904.90 using only pure acetic acid ( mw=60.05 g/mol, mw=60.05 g/mol, pka=4.76), pka=4.76), 3.00 m naoh,3.00 m naoh, and water. answer the questions regarding the preparation of the buffer. 1. how many grams of acetic acid will be needed to prepare the 500 ml buffer? note that the given concentration of acetate refers to the concentration of all acetate species in solution.

How many miles of water are produced if 5.43 mol pbo2 are consumed

Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?