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The following reaction is at equilibrium in a closed 20.0-L container. At equilibrium, the pressures of NH3 and HCl are both equal to 0.00552 atm, and the mass of NH4Cl (s) is 35.4 g. Calculate the equilibrium pressure of NH3 after 11.3 g of NH4Cl (s) is added to the container?
Griffin cites that there are four methods of reinforcement to maintain proper behavior at the work place. What are they and are they used at your current/former workplace? Which of the four do you believe are the most effective. Explain.
Differentiate between validity and reliability of a selection test. In other words, provide definitions of (1) validity and (2) reliability of a test.
Calculate the pH of the solution that contains following compounds. Some relevant Ka values are Ka(CH3COOH)=1.7 X 10 ^-5, Ka(HNO2)=7.2X 10^-4, and Ka(NH4+) = 5.6 x 10^-10.
Calculate the percent ionization of hydrazoic acid (HN3, Ka = 1.9x10^-5) in solutinos of the following concentrations. A) 0.400 M
Why have many U.S. states allowed casino gaming? Why is casino gaming controversial? Do you think casino gaming should be legalized? Explain the economic and social factors that would affect a state that has legalized casino gaming.
A particular sample of vinegar has a [H3O^+] of 1.26 x 10^-3 M. Assuming that acetic acid is the only acid that vinegar contains (Ka = 1.8 x 10^-5), calculate the concentration of acetic acid in the vinegar.
A half wave dipole antenna is operating in air at a frequency of 100 MHz. At a distance of 1000 km and at an observation point ? = ?/2, electric field strength is measured to be 5 µV/m. Calculate the a. Length of the antenna
Discuss the advisability of using modular assemblies in manufacturing. (What are the advantages and disadvantages?) To what extent can these arguments be applied to service products?
Business-Internal Service System. Customers receiving the service are internal to the organization providing the service.
an operation has a 10% scrap rate. as a result, 72 pieces per hour are produced. what is the potential increase in labor productivity that could be achieved by eliminating the scrap?
The half-life for the first-order reacion of HCl with ethylene is 15.4 s when the initial concentration of HCl is 0.67 M. What is the rate constant for this reaction?
determine the temperature at which water will boil in an open vessel when the atmospheric pressure is 400 mm Hg.
How many grams of ethylene glycol C2H6O2 must be added to 1.15kg of water to produce a solution that freezes at -3.68 degrees celsius?
The bottle is brought outside and stored at 0.0°C. (See Table 5.2) (a) What mass of water condenses inside the bottle? _______g (b) Would water condense at 10 degrees C?
If you know the answer please give units :) Part A: The reactant concentration in a zero-order reaction was 5.00×10^?2M after 140s and 3.00×10^?2M after 300s. What is the rate constant for this reaction? -> For this I got that 1.25x10^-4M/s, whic..
Calculate the density of a block.
efficiency is 2000 theoretical plates, Void volume is 1mL. Calculate the resolution between these compunds.
In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 23.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142-km trip in Europe?
Adipic acid, HOOC(CH2)4COOH, is among the top 50 manufactured chemicals in the United States (nearly 1 million metric tons annually). Its chief use is in the manufacture of nylon. It is a diprotic acid having Ka1=3.9×10?5 and Ka2=3.9×10?6.
What are the spectator ions in the solution after the complete neutralization reaction occurs when mixing the weak acid H2CO3 (aq) and the strong base NaOH (aq)?
48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?
Decide whether or not the metal K dissolves in 1 M HCl. For this metal, if it does dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
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