One liter of a solution contains 0.120 moles of benzoic acid c6h5cooh (ka = 6.5 x 10-5) and 0.105 moles of sodium benzoate c6h5coona. a) calculate the ph of this solution. b) calculate the ph of the resulting solution after adding 100 ml of 1.20 m solution of naoh to the starting solution; c) calculate the ph of the resulting solution after adding 100 ml of 0.100 m hcl solution to the starting solution.
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Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li
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Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy
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How many liters of ethylene glycol antifreeze (c2h6o2), with a density of 1.100 g/l, would you add to your car radiator containing 15.0 kg of water if you needed to protect your engine to - 21.5°c? for water, kf = 1.86°c m -1.
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One liter of a solution contains 0.120 moles of benzoic acid c6h5cooh (ka = 6.5 x 10-5) and 0.105 mo...
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