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At just above room temperature (27 oC) the vapor pressure of benzene is 0.523 atm and the vapor pressure of cyclohexane is 0.425 atm. What is the total vapor pressure at 27 oC for a 3:2 mixture of benzene to cyclohexane?
Now consider the following set of reactions: Reaction A=2NO2 --- 2NO + O2, H=109 kJ/mol Reaction B=N2O4 --- 2NO + O2, H=172 kJ/mol The equations given in the problem introduction can be added together to give the following reaction
The aqueous solution was subsequently treated with an excess of AgNO3 solution and the AgCl precipitated was collected and weighed. its mass was 2.022 grams of AgCl.
Rolls of aluminum foil are 300mm wide and 0.013mm thick. Define what maximum length of aluminum foil can be made from 0.87kg of aluminum? d(aluminum)=2.70 g/cm3)
how could you separate zinc chloride and zinc sulfide? napthalene sublimes easily but potassium bromide does not. how
How does the chemical structure of the dye relate to the Rf factor. 2. Is TLC an effective way to separate and identify substances. Why or why not
What is the composition in mole fractions of the gas mixture that is expelled? The solubilities of CH4 and C2H6 at 20 degrees celcius and 1 atm are .0175 g/L H20 and .059g/L H2O, respectively.
If the concentration of Mg2+ ion in seawater is 1350 mg/L, what OH- concentration is required to precipitate Mg(OH)2
If 11.5 kilograms of Al2O3(s), 50.4 kilograms of NaOH(l), and 50.4 kilograms of HF(g) react completely, how many kilograms of cryolite will be produced? What is the total mass of the excess reactants left over after the reaction is complete?
cs2 of ten milligrams mixes with excess of cl2 gas the heat evolved is transferred without loss to 6.450 grams of h2o
a solution is prepaired by mixing 90.0 ml of 5.00 m hcl adn 30.0 ml of 8.00 m hno3. water is then added until the final
With in each of the following species all bonds are equivalent. for which of the species can you draw two resonance structures
A compund with a formula mass of 42.08 amu is found to be 85.64% carbon and 14.36% hydrogen by mass. find its molecular formula. I did this problem and got c2h for the epirical formula then for the molecular formula i got c4h2 but im not sure that..
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