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Compound J, C16H16Br2, is optically active. On treatment with strong base, compounds K and L (each C16H14) are formed; K and L each absorb only 2 equivalents of hydrogen when reduced over a Pd/C catalyst. Compound K reacts with ozone to give phenylacetic acid (C6H5CH2COOH), while similar treatment of L gives 2 products. One product, M, is an aldehyde with formula C7H6O; the other product is glyoxal (CHO)2. Draw the structure of compound M
Calculate the vapor pressure lowering of a solution of 2.40 g of aspirin (molecular weight = 180.15 g/mol) in 55.0 g of methanol (CH3OH) at 21.2°C
The total volume of seawater is 1.5X10^21 L. Assume that seawater contains 3.1 percent sodium chloride by mass that its density 1s 1.03 g/mL. Calculate the total mass of sodium chloride.
A 60.0 g sample of an alloy was heated to 96.0 °C and then dropped into a beaker containing 87.0 g of water at 24.1 °C. The temperature of the water rose to a final 27.63 °C.
The enthalpy of vaporization of ethanol is 38.7 kJ/mol at its boiling point (78°C). Calculate the value of DeltaSsurr when 1.00 mole of ethanol is vaporized at 78.0°C and 1.00 atm
Tums calcium carbonate reactswith stomach acid ( HCI) according to the reaction below. One tablet of tums contains 500.0 mg CaCO3. If one tablet of tums is addedto 20.0 mL 0.100M HCI, how many grams of CO2 gas are produced?
Consider the reaction: 2H2S(g)==2H2(G)+S2(g) An equilibrium mixture of this reaction at a certain temperature was found to have = [H2S]=0.602 , [H2]= 3.24×10^?2M , and [S2] = 7.84×10^?3 M. What is the value of the equilibrium constant at this temp..
Which of the following will precipitate as chloride salts: Ag+, Pb2+, Ca2+, K+, and Cu2+?
Describe how you prepare 5.00 times 10^2 mL of 0.7 M CuSO4. How many grams of CuSO4 are needed. How many significant figures are used for the mass. What type of container should it be made up in.
Use tabulated thermodynamic data to calculate ?S° for the reaction: PbO2(s) + 2Ni(s) ? Pb(s) + 2NiO(s)
assume standard biological conditions and that all the enzymes are present to catalyze the reactions . the following are sequential enzyme reactions in a pathway
Use this equation to calculate the wavelength of the photon emitted in units of nanometers for the following transitions.
Which solution would increase the osmotic pressure of water the most?
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