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Acetic anhydride (molar mass = 102.09 g/mol) and salicylic acid (138.12 g/mol) react to form aspirin (180.16 g/mol) and acetic acid (60.05 g/mol). What is the atom economy of this process if aspirin is considered to be the desired product? Enter your answer as a percentage, to the nearest tenth of a percent.
classify each of the following as oxidation or reduction: a)electrons are gained b)requires a reducing agent c)Ni(s)>Ni^2+(aq) d)MnO4^-(aq)>MnO2(s) e)Sn^4+(aq)>Sn^2+(aq)
What polypeptide would be synthesized from the following template strand of DNA:3' CGG AGA CGG ACG 5'
Iodine-131 is one of the most important isotopes used in the diagnosis of thyroid cancer. One atom has a mass of 130.906114 amu. Calculate the binding energy
How many liters of ammonia gas can be formed from the reaction of 150 L of hydrogen gas? Assume that there is complete reaction of hydrogen gas with nitrogen gas and that all measurements are made at the same temperature and pressure.
A 0.0490 molal aqueous NaBr solution freezes at -0.173°C. What is its apparent percent dissociation in this solution? Kf = 1.86°C/m for water. NaBr -> Na+ + Br-
When heating the acetone in a water bath, why must there be a hole in the foil cap
A student adds 0.1 mol of oxalic acid (H2C2O4) and 0.1mol of sodium dihydrogen phosphate to enough water to make 1.0L of solution. The following equilibrium is established with Kc from this reaction greater than 1
What combination of a molecular base (that is a neutral compound, not an ion!) and a salt of the conjugate acid of that molecular base should you select to prepare a buffer solution that would maintain a pH of 9.00? For full credit, explain
In combustion studies of the use of H2 as an alternative fuel, HO is sometimes formed in flames by the reaction, H(g) + 1/2 O2(g) HO(g) Use the data below to calculate the value of Kc H2(g) 2 H(g) Kc = 0.00473 1/2 H2(g) + 1/2 O2(g) OH Kc = 0..
You are told to prepare a Ammonium buffer solution (0.15M, pH 8.5; 1.0L). You have HCl (0.15M); Ammonia (NH3) and Ammonium chloride (NH4Cl); solid 100g) (Kb for NH3 = 1.8 x 10-5). Please show how you are going to prepare this solution.
What is the molar concentration of methanol in the mixture? Give answer in M, 2 significant digits, do not write down the units.
A sample of water is collected over water at a total pressure of 616.8 mmHg at 300 C. The vapor pressure of water at 300 C is 31.8 mmHg.
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