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A) Compare the bond enthalpies of the carbon-carbon single, double, and triple bonds to deduce to an average π bond contribution to the enthalpy. What fraction of a single bond does this quantity represent?
B) Make a similar comparison of nitrogen-nitrogen bonds. What do you observe?
C) Write lewis structures of N2H4, N2H2, and N2 and determine the hybridization around nitrogen in each case.
D) Propose a reason for the large difference in your observations of parts a) and b).
Did an experiment in which we reacted magnesium and bromobenzene to make phenylmagnesium bromide, then added it to CO2 to get benzoic acid.
The recommended daily allowance of vitamin B2 (riboflavin) is 1.7mg per day for the average adult. If cheese, which contains 5.5 x 10^-6g of riboflavin per gram, were a person's only food source, how many feet of string cheese (diameter 0.15in; de..
A beaker with 1.70×102 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.20 mL of a 0.490 it M HCl solution to the beaker. How much wi..
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base.
At the start of the experiment, both thermometers record the same temperature. Why does, after 10 min, thermometer B record a lower temperature than thermometer A?
a/A sample containing anthracene dissolved in methane was separated using gas chromatography on a column with mobile phase (Vm) and stationary phase (Vs) volumes of 24 mL and 9.4 mL, respectively. For this particular column, anthracene has a r..
the following compounds has the highest boiling point and which has the lowerst boiling point? explain your answer. a- CH3OCH3 b- CH3COOH c- CH3CH2CH3
If a 190 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.1*1.0 ft, what is the average thickness of the sheet in meters?
what mass of sucrose should be combined with 514 g of water to make a solution with an osmotic pressure of 8.85 atm at
Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 110.0 pm. Then, find what wavelength of light would have sufficient energy to ionize the atom
When you combine 2-ethoxybenzaldehyde and 4-heptanone what is the product and structure of that product. With 95% ethanol and 3M sodium hydroxide
A 3 g sample of C8H16O is burned completely in excess oxygen to yield CO2(g) and H2O(l) at 25 C, releasing 117.83 kJ of energy. What is the enthalpy of formation of C8H16O?
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