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Each of the following compounds exhibits a single 1H NMR peak. Approximately where would you expect each compound to absorb? a. cyclohexane b. acetone c. benzene d. glyoxal (ethandial) e. dichloromethane f. trimethylamine ((CH3)3N)
the world's estimated annual gas reserves in 2006 were 6124 trillion ft3 .The world rate of annual use was 105.5 trillion feet3. How long these reserves will last if the rate of use continues?
A girl is celebrating her seventh birthday. Each guest is served one large slice of chocolate cake, a hamburger, French fries, and some oranges. Identify the food groups mentioned above.
Aspirin (acetylsalicylic acid) is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolved 2.00 g of aspirin in 0.600 L of water and measured the ph . What was the ka value calculated by the student if the ph of the..
during one of the processes at the plant. The two liquids are blended until a specific gravity of 1.445. Determine the mole percentage of the two components in the blend.
What is the energy difference between the staggered and eclipsed conformations of 2,2,-dimethylpropane if the eclipsing cost of Me and H is 6 kJ/mol
an aqueous solution is prepared by diluting 3.30mL acetone, CH3COH3, (d= 0.789g/mL) with water to a final volumeof 75.0 mL. The density of the solution is 0.993 g/mL. what are the molarity and the molality of acetone in this solution?
Compute the change in temperature when 2 g of sodium chloride is dissolved in 270.0 mL of water initially at 25 C. The heat capacity of water is 4.184 J/mL/K. Neglect the heat capacity of the NaCl.
what is the molarity of a potassium permanganate solution if 25.0 ml of it reacts with 10.0 ml of .0100 M sodium sulfite under acidic condictions.
2300 grams of water is heated. If this water starts at a temperature of 17 degrees Celsius, what amount of heat is needed to boil away all of this water?
Consider the cell described below: Al| Al3+ (1.00 M) || Pb2+ (1.00 M) | Pb Calculate the cell potential after the reaction has operated long enough for the [Al3+] to have changed by 0.60 mol/L.
The drug amphetamine, C6H5CH2CH(CH3)NH2, Kb = 7.8 multiplied by 10-4, is usually marketed as the hydrogen bromide salt, C6H5CH2CH(CH3)NH3+Br
Explain why the wild horse analogy can be used to help explain a certain type of chemical bonding
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