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The pH of a 0.010 mol L-1 solution of a weak monoprotic acid is 2.09 at 25oC. What is the pKa for this acid?
Predict the normal boiling point of pure B (in degrees Celcius) given that deltaHvaporization(Pure B)=67.9kJ/mol.
Draw the most stable conformation of trans-1-isobutyl-4-methylcyclohexane in both the chair conformation and the wedge structure.
a gaseous mixture of rm o2 and rm n2 contains 31.8 nitrogen by mass. what is the partial pressure of oxygen in the
One of the most common causes of inaccurate melting points is too rapid heating of the melting point apparatus near Tmelt. Under these circumstances, how will the observed melting point compare to the true melting point
What is the gas pressure (in atm) inside a 1.69-L bulb that contains 0.9-g of Ne at a temperature of 34.1 C? Be sure to report the units as atm.
Where did the energy required to maintain the system at a constant temperature in the two isothermal processes described? PAth A- sudden irreversible decrease in pressure from P1 to P2 ( P2
Seawater has a concentration of 400 ppm Ca. You wil first prepare a 10-fold diluted Buzzards Bay seawater solution (40.0 ppm Ca). Pipet 10.00 mL of Buzzards bay seawater into a 100.0 mL volumetric flask and fill to mark with deionized water
Ba(NO3)2 is 20.92 mass % chlorine, and a 1.000 g sample of the mixture in 500.0 mL of aqueous solution at 25 C has an osmotic pressure of 744.7 mm Hg. What are the mass percents of KCl, KNO3, and Ba(NO3)2 in the mixture?
What is the formula of the missing product?
A 2.00 x 10^-3 mole sample of actylsalicylic acid was dissolved in 15.00 ml of water and titrated with .100 M NaOH. The equivalence point was reached after 20.0ml of NaOH solution had been added.
A compound is 40.0% C , 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this compound. The molecular formula mass of this compound is 240 amu. What are the subscripts in the actual molecular formula?
2sbs 3ss rarr sb2s3s is the given equation in which sb2s3 is 340. gmol determine what is the mass percent yield from
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