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Problem- Mass spectral analysis of 3, 3-dimethyl-2-butanone results in several fragmentation pathways. Complete the mechanism below and draw the products for the fragmentation pathway that produces a mass spectrum peak at m/z 43. Include all nonbonding electrons and charges.
Illustrate structures to prove your interpretation.
In what form is the product (the chlorobenzoic acid) in the clear filtrate after the brown precipitate has been removed. After the addition of the hydrochloric acid
calculate the minimum volume of distilled water in liters necessary to completely dissolve a 7.5 g sample of agbr s at
Problem- If 600j of heat energy are added to a system in energy state E1 and the system then does 450j of work on its surroundings, what is the energy change of the system. What is the energy change of the surroundings.
The equilibrium vapor pressure of liquid hydrogen at 16 K is 0.213 bar. The standard (1 bar) boiling point is 20.3 K. Use the Clausius-Clapeyron equation to estimate the enthalpy of vaporization of hydrogen
Three helium nuclei fuse together, forming one carbon nucleus. The mass of carbon is less than three times the mass of helium. When helium fuses into carbon, which of the following occurs
Calculate the change of entropy for the water, ΔSwater , and for the surroundings, ΔSsur , when 1.00 mole of water freezes at 0°C and the surroundings are at (a) 0°C, (b) -2°C. Explain the physical origin of the difference.
A buffer is prepared with 0.0400 moles of an acid (Ka=1.5x10^-4) and .025 moles of base and 400 mL water. Calculate the pH.
what is the maximum height achieved if a 0.500 kg mass is thrown straight upward with an initial speed of 55 ms-1?
A 0.50 sample of compound contains 0.40g of Carbon and .10g of Hydrogen. What is the empirical formula
what is the molecular shape of 2-butanol c2h9oh? what are the bond angles molecular polarity and the hybridization of
Explain which of the subsequent statements accurately explain the insulin receptor. There is more than one correct answer. Select all the true state
A 21.40L gas cylinder has been filled with 3.186 moles of gas. You measure the pressure to be 3.260 atm . What is the temperature inside the tank
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