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A 0.5485 g solid mixture have only ferrous chloride hexahydrate and ferrous ammonium sulfate hexahydrate. dissolved in 1M sulphuric acid get oxidized to Fe3+ with hydrogen peroxide, and get precipitated with cupferron. ( ferric cupferron complex was ignited to produce 0.167 g of ferric oxide, Fe2O3 ). Determine the weight % of Chlorine in original sample.
Calculate the work done if a gas is compressed from 7.7 L to 1.3 L at constant temperature by a constant pressure of 2.6 atm, and give your answer in units of joules. (1 L · atm = 101.3 J) J In the above example, work is being done by what?
WHen 1.187g of a metallic oxide is reduced with excess hydrogen, 1.054g of the metal is produced. What is the metallic oxide
In the first step of the trypsin mechanism, the side-chain oxygen of Ser 195 attacks the carbonyl carbon of the substrate. Use PyMOL and your model of the enzyme substrate complex to determine the distance between these two atoms.
If a reaction takes 8 hours to complete at 15 C, which of the following is most likely true if the same reaction is carried out at 45 C A. the reaction will be faster B. the reaction will be slower C. the reaction will take the same amount of time..
What mass of isopropyl alcohol (C3H8O) in grams can be melted when a sample absorbs 1575 kJ of heat at its melting point? (Isopropyl alcohol: ?Hfus = 5.37 kJ/mol)
Describe how soap works, include a drawing of a micelle in your description. Describe the difference between saturated and unsaturated fats. How can you as a consumer tell one from the other?
The element lithium has two naturally occurring isotopes, 7Li (isotopic mass 7.0160 amu, abundance 92.5 %) and 6Li (isotopic mass 6.0151 amu, abundance 7.50 %). Calculate the atomic mass of lithium.
What is the hydronium ion concentration in an aqueous hydrochloric acid solution that has a pOH of 11.540 ?
Name one analytical technique you can use to determine if your product is the E,E isomer and not the E,Z or Z,Z isomer.
Calculate the rms (average) speed of NF3 atoms or molecules at 202 oC. Use R = 8.314 kg-m2/K-s2-mol for the value of the gas constant.
Calcultate what is the value of enthalpy H reaction If the temperature increased from 35.0 degree celsius to 76 degree celsius and the heat capacity of the calorimeter = 23.3kj/c ? (the molar mass of C2H5OH = 46.07g/mol. )
Draw the three different plates you would expect from obtaining a TLC from ibuprofen on silica gel using (a) toluene, (b) ethyl acetate, and (c) methanol as the eluting solvents
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