A solution is prepared by dissolving 200 g of k2hpo4 and
A solution is prepared by dissolving 20.0 g of K2HPO4 and 25.0 g of KH2PO4 in enough water to produce 1.0 L of solution. What is the pH of this buffer?For phosphoric acid (H3PO4), Ka2 = 6.2 10^-8.
A) 7.70B) 7.42C) 7.21D) 7.00E) 6.72
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when that precipitate was treated with NH3 it turned black. Based on this what can you say about the ions that may be present or absent in the solution? Can you reach a conclusion about the presence or absence of each of the three ions based on th
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A solution is prepared by dissolving 20.0 g of K2HPO4 and 25.0 g of KH2PO4 in enough water to produce 1.0 L of solution. What is the pH of this buffer
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A policeman uses a radar gun to detect the speed of drivers in a 65 mph (29.06 m/s) zone, What is the driver's speed, Is the driver breaking the speed limit
The County Executive for Monroe County is concerned about the response time for the three fire companies in the county. Samples of the response times (in minutes) for each company follow. At the 0.05 significance level is there a difference in the me
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