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A mixture of NH3(g) and N2H4(g) is placed in a sealed container at 320 K. The total pressure is 0.51 atm. The container is heated to 1200 K at which time both substances decompose completely according to the equations 2NH3(g)→N2(g)+3H2(g); N2H4(g)→N2(g)+2H2(g). After decomposition is complete the total pressure at 1200 K is found to be 4.5 atm. Find the percent (by volume) of N2H4(g) in the original mixture.
Calculate the pH of a solution resulting from the addition of 10.0 mL of 0.10 M NaOH to 50.0 mL of 0.10 M benzoic acid (Ka = 6.5 x 10-5).
For each of the following experimental or calculations errors, tell of the calculated value of R, writte if would be too high, too low or unchanged.
Describe the reactions and specific interactions (intermolecular forces ) that make p-tert-butylphenol soluble in NaOH , but not aqueous HCL. Draw a picture of the molecules that shows the important interactions
The reaction that produces the water gas mixture is as follows- C(s) + H2O(g) - CO(g) + H2(g) This reaction requires an input of 131 kJ of heat for every mole of carbon that reacts.
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced.
What observations might enable us to deduce that a chemical change has occured when dilute aqueous
Calculate the pH of the solution after the following volumes of HCl have been added. (For each part remember t ask yourslef these questions. What units am I working in?
A solution of I2 was standardized with ascorbic acid. Using a .1000 g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. A. What is the molarity of the iodine solution? B. What is the titer of the iodine solu..
Describe the nature and characteristics of PCB's. Why are they of importance to an EH&S or FS professional who encounters them when coming upon an incident scene where they are present? What precautions, or actions, should the EH&S or FS professio..
Based on the law of conservation compute how many grams of oxygen are needed in the following reaction if 12.43 g of magnesium was consumed and 34.54g of MgO is produced
A saturated solution of calcium iodate, Ca(IO3)2, is created by suspending a small amount of pure solid of Ca(IO3)2 in 50.0 mL of distilled water.
Explain how normal buffer system works? How would simply normal breathing increase normal Ph in buffer system?
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