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The molecular weight of a compound can be determined by proton NMR. The NMR spectrum of an unknown compound revealed that the compound had a total of six hydrogen atoms. A solution was prepared that contained 1.50g of the unknown and 1.45g of 1,3,5-trinitrobenzene as a reference compound. The integration of the NMR spectrum for the mixture gave 421 area units for the 1,3,5-trinitrobenzene peak and a total of 1240 units for the unknown. Calculate the molecular weight of the unknown.
What is theoretical yield of nitrogen monoxide in grams d. How many moles of excess reactant remain e. What is the % yield of the reaction
An impure sample of sodium chloride weighed 0.6825g. When dissolved in water and reacted with excess silver nitrate, AgNO3, 0.9855g of AgCl precipitated. What is the percentage of NaCl in the impure sample.
how to you determine the equilibrium constant for hydration. Rank the carbonyl compounds, but i'm not even sure how to figure it out in the first place
A soluution prepared by dissolving 682 mg of a sugar (a molecular compound and a nonelectrolyte) in 1.00g of water froze at -3.72 degrees C. What is the molar mass of this sugar?
energy content of gasoline is about 46 mjkg or about 37 mjliter. a small car with engine of specified capacity e.g. say
cadaverine a foul smelling substance produced by the action of bacteria on meat contains 58.55 c 13.81 h and 27.40 n by
Calculate the pH after each of the following volumes of NaOH have been added: 0 mL, 10.00mL, 19.90mL, 20.00mL, 20.10mL
Cerium is often used as a reducing agent. Although it is expensive, it has a high stabile and constant value of E^ o over a PH range from 0 to 7.
A 20.0 L nickel container was charge with .805 atm of xenon gas and 1.21 atm of flourine gas at 400 C. The xenon and flourinereact to form xenon tetraflouride. what is mass (g) of xenon tetraflouride can be produced assuming 100 % of yield
Write the equation showing the S-trans to S-cis equilibrium of the two conformations for a. (E)-1,3-pentadiene b. (Z)-1,3-pentadiene and which equilibrium will favor the s-tans conformation more strongly
If 100mL of 0.7M HCl is mixed with 900mL of water, what is the molarity of the HCl now
What wavelength should the astrophysicist look for to detect a transition of an electron from the to the level
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