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In a volumetric analysis experiment, an acidic aqueous solution of methanol (CH3OH) is titrated with a solution of potassium dichromate (K2Cr2O7) according to the subsequent balanced chemical equation:
2K2Cr2O7(aq) + 8H2SO4(aq) + 3CH3OH(aq) ===> 2Cr2(SO4)3(aq) + 11H2O(l) + 3HCOOH(aq) + 2K2SO4(aq)
It needed 24.14 mL of 0.0357 M K2Cr2O7 to reach the endpoint. Explain what mass of CH3OH was present initially?
using a sample of gas having 1.47 mol at the temperature of twenty five degree celsisu exerts a pressure of 398 torr
Calculate the enthalpy and entropy departure for water at 400 C and 30 MPa using generalized correlations. Compare these values to those in the steam tables
Another beverage that uses FD&C Yellow #5 (M = 534.36 g/mol) for its distinctive color is Gatorade Lemon-Lime. The literature value of the molar absorptivity of FD&C Yellow #5 at 430 nm is E = 2.43 x 10^4 M^-1 cm^-1.
what is the volume of distilled water that is needed to be added to 8g of sodium hydroxide to make it 0.4 mol dm-3
Caprylic acid (144.21g/mol), pKa= 4.89, density= 0.910 g/cm3, solubility= 0.068g/100mL, melting point= 16.7 c, boiling point= 239.7 c. What is the pH of a saturated aqueous solution
Consider the following pair of nucleophiles in CH3OH. Which, a: F- or b: N3- is the better nucleophile. Consider the following pair of nucleophiles in CH3OH. Which, a: CH3S- or b: H2O is the better nucleophile
Assuming the structures above gave molecular ion abundances of 12, 70, and 23(dexchlorpheniramine, 9-aminoacridine and pilocarpine, respectively), what abundances would you expect for the M+1 and the M+2 peaks for each structure?
When a solution of hydrogen peroxide (H2O2) is put on a cut, bubbles, producing water and oxygen gas according to the following equation:
How would you expect the amino acids glycine, alanine, and phenylalanine to travel relative to each other on the silica plates using a mixture of chloroform/methanol/ammonia? Explain your answer.
What is the osmotic pressure of a solution made from dissolving 90.0 g of glucose, rm C_6H_{12}O_6, in 650 mL of water at 14.0{^circ}C.
What could happen if a large housing area built on an unknown hazardous waste site contaminated with ppolychlorinated biphenlys
Addition of NH3 precipitated Fe2O3*xH2O, which was ignited to give 0.264g of Fe2O3 (FM 159.69). What is the average mass of Fe2SO4*7H2O (FM 278.01) in each tablet?
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