Answers by LaurelDumas

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Design a process for the purification of 500 grams of crude aspirin containing impurities such as acetic acid and sulfuric acid. The final product must have a purity of at least 99.5%. Describe the steps involved in the purification process, including the necessary equipment, reagents, and conditions for each step. Also, calculate the percent yield of the final product based on the initial mass of crude aspirin.

answered Feb 4 in Chemical engineering

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What is the concentration of a copper(II) ion (Cu2+) solution using polarography if the current at -0.5 V vs. saturated calomel electrode (SCE) is 10 mA and the current at -1.0 V vs. SCE is 25 mA, assuming the standard reduction potential of Cu2+/Cu is +0.34 V vs. SCE and the supporting electrolyte is 0.1 M KCl?

answered Jan 30 in Analytical Chemistry

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What is the critique of the self-determination theory of motivation?

answered Jan 16 in Psychology

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Where does theory evaluation fit in the research process?

answered Jan 16 in Psychology

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What is the main argument of the developmental systems perspective?

answered Jan 15 in Psychology

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What is the prevalence of eating disorders?

answered Jan 15 in Psychology

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