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Precipitation reactions. "WE put 50 mg of PbCl2 in 100 ml of water at 25 degrees Celcius. What is the chloride ion concentration of the solution? (Ksp of PbCl2 =1.7 x 10^(-5)
Compound B gave a positive 2,4-dinitrophenylhydrazine test, but a negative result when treated with the Tollens reagent. However, B did give a positive iodoform test. The 1H NMR spectrum for Compound A showed the following
what are the names of the quantity measured by each of seven SI base units and the SI symbols of the unit?
how many grams of SO2 are required to treat 3.00x10^8 L of 0.0750 mM Cr(VI)? 2CrO4+3SO2+4H yields Cr2(SO4)3+2H2o
What mass of CaCl is needed to make 350 mL of a 0.233M CaCl solution?
How many kilocalories are required to produce 1.39 mol of aluminum? 2Al2O3 yields 4Al+3O2; (delta) H = +801(kcal/mol (+3350 kJ/mol )
the free energy change for the succinate dehydrogenase reaction ctalyzed by Complex II is insufficient to drive ATP synthesis under standard conditions.
A 7.8g sample of C6H5NH3Cl is dissolved in water to make 450.mL of solution. What is the pH of the solution? pKb(C6H5NH2) = 9.37.
The heat capacity of a bomb calorimeter is 87.5kJ/K . If 67.2g of methane is combusted under such reaction conditions, what will be the increase in temperature of the calorimeter? Delta E combustion for CH4(g) is -885.4kj/mol.
assume standard biological conditions and that all the enzymes are present to catalyze the reactions . the following are sequential enzyme reactions in a pathway
what are the names of the products in this equation?
estimate the enthalpy change for the reaction between 1 mol c2h5oh as liquid ethanol, a fuel made by fermenting corn, and o2 to yield co2 and h2o under standard conditions by using bond enthalpies,
The decomposition of hydrogen peroxide is a first-order process with a rate constant of 1.06 x 10-3 min-1. How long will it take for the concentration of H2
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