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How many grams of ammonium chloride (pKa=9.24, 58.491 g/mol) should be added to 500 mL of 0.1060 M ammonia to make a buffer with pH=8.5 (to three s.f.)?
At 21, the rate constant is0.0110 s^-1 . At what temperature in degrees Celsius would this reaction go twice as fast?
Concentration of H 2 is observed 2.15 moles/L When the reaction N 2 (g) + 3 H 2 (g) ?? 2 NH 3 (g) comes to equilibrium. Determine the numerical value of the Kc equilibrium constant?
To determine the concentration of Cu+2 in a large sample of water an electrochemical was constructed usingAg+1 (1.0 M) and Ag as the athode and Cu in the CU+2 containing solution as the anode. the cell potental was measure to be .62volts. what is t..
What percentage faster will a reaction go if a catalyst lowers its activation energy from 50 kJ mol^- to 25 kJ mol^-.
You could determine Ka for benzoic acid by measuring the pH of a 0.010 M solution of benzoic acid. Why is graphical method (pH vs volume of NaOH added) a better way of determining Ka
at 125degc kp 0.25 for the following reaction.2 nahco3s na2co3s co2g h2oga 1.00 l flask containing 14.8 g nahco3 is
A solution is prepared by adding some solid CaF2 to water and allowing the solid to come to equilibrium with the solution. The equilibrium constant for the reaction below is Kc = 3.9x10-11.
The chlorination of pentane gives you a mixture of 1-chloropentane, 2-chloropentane, and 3-chloropentane. What are the ratios most to least that these products will be formed
A 250-L tank is evacuated and connected to a 50.0-L bulb filled with compressed argon. After they are joined, the pressure in the bulb falls to 2.20 atm.
A 0.625 mole sample of N2 gas at 1.50 atm and 45C occupies a volume of 10.9L. What volume in liters would each of the following molar sized samples of gas occupy at the same temperature and pressure. a) 2.00 moles CO2
multiple choice questions in radioactive decay.1.an alpha alpha particle is essentially a
Write the equation for the conversion of the fatty acid linoleic acid [CH3-(CH2)4-CH=CH-CH2-CH=CH(CH2)7-COOH] into its methyl ester.
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