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Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 1-bromopropane. Draw the chemical structure of the alkene that you could make using these reagents in a synthesis that involves the Wittig reaction.
The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.60 mL of a 0.330 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
A 4.63 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51?C.
defined lead free paint as having less than 75mg of lead per 125mg of paint. How many parts per million of lead is this?
It has a diameter of 13.46 cm. On the other hand, spent uranium (from processing which removes the commercially important rare isotope) has a specific gravity of 19.05. How many pounds would a uranium cannonball of the same dimensions as the iron ..
What is the wavelength of light required to induce a transition from the ground state to the first excited state?
What is the molarity of an unknown gas that weighs 0.110 g in a 63.5mL container at 752 torr and 23 C
What is the ratio of oxygen atoms to hydrogen atoms in the mineral cacoxenite, Fe4(PO4)3(OH)3 • 12H2O?
How many molecules of carbon dioxide are produced when 130 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
The standard enthalpies of formation of SO3(g), S(g) and O(g) are -359.7, +278.8 and +249.0 kJ mol-1, respectively. Use these data to calculate the average bond energy (in kJ mol-1) of the S=O double bond.
The molar enthalpy of fusion of solid silicon is 46.4 kJ mol-1, and the molar entropy of fusion is 27.6 J K-1 mol-1.
What mass of CaCO3 will produce 8.0 L of CO2, measured at standard temperature and pressure conditions? Molar mass of CaCO3 = 100. g per mole.
The MO diagram after the Jahn-Teller tetragonal distortion is added for a d4 high spin complex
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