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How many milliliters of 0.270 M Na2S2O2 solution are needed to titrate 2.303 of I2 according to the equation below?
I2(aq)+2(S2O3)2-(aq)-->(S4O6)2-(aq)+2I-(aq)
Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 5 state to the n = 3 state
Write balanced net ionic equation for the reactions that take place when the following reagents are mixed together in aqueous solution:
What is the pH of a 0.15 M solution of the weak base ammonia (NH3)? The Ka of the conjugate acid is (NH4) is 5.6e-10.
The recommended daily dietary intake of calcium for adult men and pre-menopausal women is 1100 mg/day Calcium citrate , Ca3(C6H5O7)2. What mass of calcium citrate would be needed to provide the recommended daily intake of calcium
efficiency is 2000 theoretical plates, Void volume is 1mL. Calculate the resolution between these compunds.
"Besides the traditional colorimetric acid/base indicators, there is another class that doesn't use color, the olfactory acid-base indicators! These compounds smell or don't smell based on their pH
What happens to it after bromination of Cholesterol takes place? (ie- why is it that bromination allows you to separate it from cholesterol?) 3) Give a stepwise mechanism for the debromination step
11 g of sodium bromide NaBr is mixed with 9 g of butanol CH3CH2CH2CH2OH to yield 258 mg of bromobutane CH3CH2CH2CH2Br. Under the catalysis of 10 ml of sulfuric acid density 1.84g/ml.
which of the following exhibits dipole-dipole intermolecular forces: HBr, NBr3, SBr2, CBr4?
Detrmine What mass of lithium (in g) is needed to react completely with 57.9 mL of Nitrogen gas at Standard atmospheric conditions?
Why does the 13C NMR show five different types of carbon atoms when the molecular formula indicates the compound contains seven carbon atoms
Write structural formulas for six, recognizing that the molecular formula may be twice the empirical formula in some of them.
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