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In the electrolysis of aqueous NaClO3, how many liters of Cl2(g) (at STP) are generated by a current of 60.0 A for a period of 80.5 min? Use R = 0.0821 L-atm/mol-K for the gas constant and use F = 96,500 C/mol for Faraday's constant. Assume that 0 oC = 273 K. The unbalanced chemical reaction representing this electrolysis is shown below. NaClO3(aq) + H2O(l) Cl2(g) + O2(g) + NaOH(aq)
Determine the number of moles of oxygen that would be needed to completely combust 0.0350 moles of benzene
The precipitate that forms in the qualitative analysis of the chloride ions is AgCl. Calculate the mass of AgCl that should be produced when an excess of AgNO3 is reacted with 0.1900 g of [Co(NH3)5Cl]Cl2.
Weak base NH3 has Kb = 1.75 * 10^-5. Calculate the concentration of hydronium and pH of 0.252 M NH3 aqueous solution.
Calculate the cost of 40 mL of sulfuric acid. given that Sulfuric acid (18 M) = $54.30/2.2 L
In tables of thermodynamic data provided in chemistry books, one finds ?H°f, ?G°f, and S° listed. Briefly, explain why the entropy data are supplied as S°, while the enthalpy and free energy data are in the form of ?H°f and ?G°f, respectively.
Identify the following compound from its IR and proton NMR spectra. C4H6O: NMR: ? 2.43 (1H, t, J = 2 Hz); ? 3.41 (3H, s); ? 4.10 (2H, d, J = 2 Hz) IR: 2125, 3300 cm-1 The C4H6O compound liberates a gas when treated with C2H5MgBr.
Not all Friedel-Crafts reacts require a strong Lewis acid catalysts to generate the electrophile for the substitution reaction. Show, using curved arrows, how the electrophile is generated from t-butanol in the presence of H2SO4
A student places 2.0 moles of methylamine in 500ml of water. what is the pH? the Kb of methylamine is 4.4x10^-4.
What observed rotation is expected when a 1.28M solution of (R)-2-butanol is mixed with an equal volume of a .640M solution of racemic 2-butanol, and the resulting solution is analyzed
How many total moles of ions are released when the following sample dissolves completely in water? 7.24x 10^20 formula units of NiCl2.
Explain why the wild horse analogy can be used to help explain a certain type of chemical bonding
What was the temperature of the sample after heating. Please show work I've asked this question before and I'm getting mixed answers.
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