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Calculate an approximate enthalpy (in kJ) for the reaction of 4.52 g gaseous methanol (CH3OH) in excess molecular oxygen to form gaseous carbon dioxide and gaseous water. Remember to first write the balanced equation.
What is the minimum concentration of ammonia that should dissolve AgBr to produce a 0.01 M Ag(NH3)2+ solution
Calculate the vapor pressure lowering of a solution of 2.40 g of aspirin (molecular weight = 180.15 g/mol) in 55.0 g of methanol (CH3OH) at 21.2°C
the mineral greenockite is a rare yellow sulfide of cadmium that is 78.0 cadmium and 22.0 sulfur by mass. determine the
correlation of structure with the melting point.the melting points of a series of 18-carbon fatty acids are stearic
How many minutes will it take to plate out 16.22 gram of Al^3+ using a current of 12.9 amps in an electrolyic cell. What current is required to deposit aluminum at a rate of 1.25g/min
What reactants are needed to make bromocyclohexane into cyclohexanol without producing any (or very little) cyclohexene
Friedel-Crafts alkylation of toluene (C6H5CH3) with tert-butyl chloride [(CH3)3CCl] and aluminum chloride (AlCl3) occurs
The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron
Why is the intercept of a calibration curve of absorbance vs concentration not zero?
determine at what pressure will pure h2o nbspstart to boil if its temperature is seventy five degree celsius and given
Dissolving 3.00 g of an impure sample of CaCO3 in an excess of HCl acid produced .656 L of CO2 (measured at 20 degrees C and 792 mmHg). calculate the percent by mass of calcium carbonate in the sample. State any assumptions.
calculate the equilibrium concentrations of H2 and Br2 and HBr? Calculate Kc
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