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Question - How many grams of dry NH4Cl need to be added to 1.90L of a 0.800M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.69? Kb for ammonia is 1.8*10^-5
I desire help for above question. Illustrate each step for the above problem.
What is the mass percent of ethylene glycol (C2H6O2) in a solution of ethylene glycol in water that has a freezing point of -15C? (Kf for water is 1.858C/m.)
Perform each of the following conversions,being sure to set up clearly the appropriate conversion factor in each case- i) 2.4 lb to kilograms
Determine the relative abundance in of each isotope in the synthesized material. To make it easy, use whole numbers (intergers) for the atomic mass of the meitnerium isotopes in your calculations.
how many atoms of aluminum can be produced by the decomposition of 31.5 g of aluminum oxide
Consider the following reaction: 2A + B → 3C + D If 63.0 mol A and 42.0 mol B react to form 54.0 mol C. What is the percent yield of this reaction.
An aqueous solution has a density of 0.80g/mL and is 51.0% C2H6O by mass. Determine the molar concentration of C2H6O.
devise a reaction scheme to make ethanol from propanoic acid. several steps may be required. for each reaction include
what is the ph of the final solution and 10 ml of 0.100 m hcl is added to 40 ml of this buffer what is the ph
consider the chemical equationcuso4 x 4nh3 s lt-------gt cuso4 x 2nh3 s 2nh3 g the arrow is an equilibrium arrow. it
What was the chemical reaction in the body, and what substance in the liver was produced to help catalyze the reaction?
After obtaining a preliminary melting point range of 124-130 degrees C for an unknown, you identify it as benzamide. Running a mixed melting point determination with benzamide affords a melting point range of 117-125 degrees C
What is the pH of the solution obtained when 135 mL of 0.618 M NaOH is diluted to 16.0 L with water?
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