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Problem- A student titrated a solution of formic acid with sodium hydroxide. The student plotted pH versys volume (mL) of NaOH added and found the titration required 26.66mL of NaOH to reach equivalence point. Describe how you would use the students titration curve to determine the K(a) value for formic acid.
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Explain a reaction was performed in which 0.49 g of dibenzyl ketone was reacted with 0.49 g of benzil to make 0.73 g of 2,3,4,5-tetraphenylpentadienone. Compute the theoretical yield and percent yield for this reaction.
A flexible container initially holds 2.0 moles of an ideal gas at 293K and 1.0 atm. The container is compressed isothermally
Perform a degree of freedom analysis and show that all of the unknowns can be solved.
Small helium-neon lasers emit 1.51 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
A sample of material contains contains 20 mg of I ^131. Calculate: A) The number of I ^131 atoms initially present. B) The activity in becquerels and curies.
A piece of silver with a mass of 418 g has a heat capacity of 99.1 J/Celcius. What is the specific heat of silver
photochromic sunglasses which darken when exposed to light contain a small amount of colorless agcl embedded in the
In the presence of a tungsten catalyst at high temperatures, the decomposition of ammonia to nitrogen and hydrogen is a zero order process. If the rate constant at a particular temperature is 3.7*10^-6 mol/L*sec
The isentropic efficiency of the turbine is 85%. The air is then delivered to the aircraft cabin and leaves the aircraft at 160 C. Calculate. i. The refrigerating effect
What observed rotation is expected when a 1.26 M solution of (R)-2-butanol is mixed with an equal volume of a 0.630 M solution of racemic 2-butanol
Write an equation that represents the reaction of 2% ethanolic PBP solution with 4-methylcyclohexane, and name the product
Explain what are the chemical reactions that take place when you try to crystallize salts formed by mixing (+-)-s-butylamine and (+-)-tartaric acid
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