How many grams of dry nh4cl need to be added
How many grams of dry NH4Cl need to be added to 2.40 L of a 0.400 M solution of ammonia, NH3 , to prepare a buffer solution that has a pH of 8.58? Kb for ammonia is 1.8*10 ^-5.
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Write a balanced equation for the reaction and determine how much oxygen in grams to the nearest 0.1 grams is formed by the complete reaction of 148.4 g of NA2o2.
what are the partial pressure in atm of each components of this mixture if it is held in a 10.0 L vessel at 14 degree Celsius.
Calculate the amount of heat (kcal) released when 50.0g of steam at 100 degrees celcius hits the skin, condenses, and coos to a body temperature of 37 degrees celcius.
65.50 mL of 0.161 M HF is titrated with 0.1200 M NaOH. How many mL of the base are required to reach the equivalence point? (Ka for HF is 6.8 x 10-4)
If 12.6 grams of iron (III) oxide reacts with 9.65 grams of carbon monoxide to produce 7.23 g of pure iron, what are the theoretical yield and percent yield of this reaction? Be sure to show the work that you did to solve this problem
Why do we assume that the extra electrons in I3- must be placed on the central Iodine atom to exceed the octet rule? Is there any reasoning/theory that discourages the electrons being placed on the non-central atoms(if any)?
Calculate the final temperature when a 25.5 gram sample of ice at 0oC is placed into a styrofoam cup containing 116 grams of water at 71.9 oC.
What horsepower is added to water to pump it vertically through a 200-ft-long, 1.0-in.-diameter drawn tubing at a rate of 0.060 ft3 s if the pressures at the inlet and outlet are the same? 8.62 Water flows from a lake as is shown in Fig. P8.
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Explain the risks of not reporting the results of your forensic assessment findings accurately. Provide specific examples.
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