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The 1H NMR indicates there are three non-equivalent types of hydrogen atoms in your final compound with peaks at ~ 7.30 (m), 4.30(s), and 3.90(s) ppm. The three non-equivalent types of hydrogen atoms are aromatic hydrogens, methylene hydrogens, and the hydroxyl group. Which hydrogen atoms gave rise to the peak at ~ 7.30 ppm?
a. aromatic hydrogensb. methylene hydrogensc. hydroxyl hydrogend. solvent
Determine the mass of the liquids in grams if this liquid is added to the beaker the combined mass becomes 238.254 grams? Given that the mass of beaker=225.08 g?
During the synthesis of diphenylacetylene, why is it more difficult to remove KBr for the second time
Calculate the partial pressure of each gas and the total pressure after the valve between the flasks is opened. P(He) in mmHg P(Ar) in mm Hg Ptotal in mm Hg
A gas expands and does P-V work on the surroundings equal to 313 J. At the same time, it absorbs 135 J of heat from the surroundings. Calculate the change in energy of the gas.
A 0.692 g sample of glucose, C6H12O6, is burned in a constant volume, bomb calorimeter. The temperature change is measured at 1.80 degrees C.
How will the melting point of your semicarbazone derivative be affected if the derivative is not dry enough
How many grams of Na3PO4 will be needed to produce 400ml of a solution that has a concentration of Na+ ions of 0.900 ?
Estimate the enthalpy change for the reaction between 1 mol c2h5oh as liquid ethanol, a fuel made by fermenting corn
When a mole of C2H4 is combusted it reacts with 3 moles of O2 to produce CO2 and H2O. How many moles of CO2 and how many moles of H2O are produced?
The block of iron is smaller than the block of aluminum. Both objects have the same volume.
How many grams of no2 will be produced when 5.00 moles of NO react?
scuba divers has a volume of 8.0 L and a pressure of 140 atm at 20 degrees C. What is the volume of air in the tank in liters at STP?
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