A 10.0-gram 2-hydroxybenzoic acid was reacted with 36.0 g of ethanoic anhydride. How much ethanoic acid, in grams, was added in excess if the reaction yielded 13.0 g aspirin?

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Q: How many grams of KCl are there in 10 mL of 20% solution.

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Q: Draw 2.2-dimethylbutane. Show all hydrogen atoms. Select Draw Rings H с More Erase

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Q: 1. Draw the structures of the following compounds: a. (2E, 4E)-1-chloro-3-methyl-2,4-hexadiene b.…

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Q: 21 The presence of the electron withdrawing group -NO2, and electron donating group -NH₂ in the…

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Q: A solution containing a 250 mg sample of an organic acid undergoes potentiometric titration with…

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Q: What is the net charge on the tripeptide His-Glu-Lys at pH 7? The table below gives the pKa's of the…

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Q: Under standard conditions (250 C, 1.0 atm): i. If Cr metal is immersed in a solution of Zn(NO3)2,…

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Q: 2. Balance the following equations a) AB₂ +C₂A₂C3 + BC₂ b) AB+ CDE ABE4 + DE2 + C₂E

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Q: OH SOCI2 pyridine NaCN

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Q: A chemist measures the enthalpy change AH during the following reaction: COC1₂(g) + 4NH3(g) →CO…

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Q: Given the electrochemical cell at 298K. E Cu/Cu2+ = +0.342 V EZn/Zn2+ = -0.762 V a. Write the…

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Q: 2. A sample of oxygen occupies 10 L ,pressure of 790 torr (105 kPa ).At what pressure occupies 13.4…

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Q: NH₂ 1. NaNO₂, HCI 2. HBF4

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Q: NH₂ 1. NaNO₂, HCI 2. HBF4

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Q: what is the wavelength of the HOMO- LUMO transition in this polyene dyes?

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Q: 12. A gas of mass 0.2 kg is compressed slowly from 150 kPa and 40°C to 600 kPa, in an adiabatic…

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