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A student needs to prepare a buffer solution with a pH of 7.20 using acetic acid (CH3COOH) and sodium acetate (NaCH3COO), with a total buffer concentration of 0.20 M. What mass of CH3COOH needs to be added to 200 mL of 0.10 M NaCH3COO to obtain the desired pH? (Ka of CH3COOH is 1.8x10^-5)
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Jan 22
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Chemical reactions
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Who proposed the psychosocial theory of development?
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Jan 17
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Psychology
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What is generalised anxiety disorder (GAD)?
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Jan 14
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Psychology
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What are some non-pharmacological approaches to pain management?
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Psychology
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Where is pedocal soil commonly found?
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Jan 8
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Science
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The bond between the two nitrogen atoms is a what?
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Dec 31, 2024
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Science
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What part of a spider is equipped with poison glands?
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Dec 27, 2024
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Science
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