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A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 3.075-g sample of the powder was dissolved in HNO3 and heated to convert all iron to Fe3 . The addition of NH3 precipitated Fe2O3·xH2O which was subsequently ignited to produce 0.304 g of Fe2O3. What was the mass of FeSO4·7H2O in the 3.075-g sample?
In the following compound [CoCl(NH3)4(H2O)]SO4, write the formula and charge(if applicable) for: a) the ligands b) the complex c) the coordination sphere
If a bottle of nail polish remover contains 150g of acetone, how much heat would be released by its complete combustion?
Using 1M aqueous HCl, 1M aqueous NaHCO3 and 1M Aqueous NaOH, could you separate an ethereal solution of benzoic acid and salicylic acid. If so, provide a flow chart indicating how; if not, explain why.
Data for the decomposition of hydrogen peroxide at some set temperature T is provided below. The rate law depends only on the concentration of H2O2
Determine the partial pressure. Calculate the total pressure and volume in liters at STP of Nitrogen, Helium and Neon mixture.
Lead(II) sulfide reacts with hydrogen peroxide to form lead(II) sulfate and water. How many grams of hydrogen peroxide are needed to react completely with 265 g of lead(II) sulfide?
When (S)-2-bromobutane undergoes an S2N reaction with CH3O-, the product is the compound shown below. What is/are the configuration of the product(s) obtained from this reaction
The specific heat of water is 4.184 J/gxC. Assume the density of th water is 1.00g/mL and there is no heat lost or gained by the calorimeter.
What is the molarity of a solution of HCl if 2.0 L of it are needed to react with 20g of NaOH?
Explain for which of the following species resonance is an important property: HONO, HONO2, N3-, NO2-, NO2.
The activation energy for the isomerization ol cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this reaction increase as the temperature rises from 256 to 297 oC.
For a given reaction, ?H= -19.9 kJ/mol and ?S= -55.5 J/K-mol. The reaction will have ?G=0 at what temperature? Assume that H and S do not vary with temperature.
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