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In the analysis of 0.5 g sample of Feldspar , a mixture of chlorides of Na and K are obtained , which weighs 0.1180 g. subsequent treatment of mixed chlorides with AgNO3 gives 0.2451 g AgCl . what is % of Na2O and K20 in feldspar.
To resolve an object in an electron microscope the wavelength of the electrons should be close to the diameter of the object. Explain what kinetic energy must the electrons have in order to resolve a protein molecule that is 8.60 nm in diameter
Compute the [H ] and pH of a 0.0020 M hydrazoic acid solution. Remind that the Ka of hydrazoic acid is 2.2 × 10-5. Utilize the method of successive approximations.
three hundred gallons of a mixture containing 75.0 wt ethanol and 25 water mixture specific gravity 0.877 and a
The enthalpy change for the following reaction is -185 kJ. H2(g) + Cl2(g)2HCl(g) Estimate the Cl-Cl bond energy in Cl2(g), using tabulated bond energies (linked above) for the remaining bonds.
10mL of 0.1M HNO2 (nitrous acid, ka=4.0x10^-4)is titrated with a .01M KOH solution. After 10mL of the KOH solution is added, what will be the pH in the titration flask?
what volume of co2 gas is produced by the complete combustion of 2.6l c3h8 gas? assume all gas volumes are measured at
calculate the mass of agcl and h2s formed when 85.6 g of ag2s reacts with excess hcl.
Question- If the products of a certain reaction are favored (negative ?G value), we would expect a significant amount of product to form when the reactants are combined. Which of the following could explain why such a reaction might produce very l..
Calculate the pH and pOH of each of the following solutions. [H3O+] = 1.5x10^-8 M? [H3O+] = 1.0x10^-7 M? [H3O+] = 2.2x10^-6 M
Explain why in the IR spectrum of benzil does a peak appear ~1650 cm -1 rather than at 1700 cm-1 using resonance structures.
Calculate the gas NH3 in ppm over NH4OH solution.The density of the solution is 0.9g/ml and the Commercial concentrated aqueous ammonia is 29%.
detailed reaction mechanism for the acid-catalyzed hydrolysis of lactose to its component monosaccharides
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