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We had to do an experiment that depolymerized PET into terephthalic acid and ethylene glycol using 1-pentanol and KOH. One of the post-lab questions is as follows: "Your mechanism will have some leaving groups that are not considered "good" leaving groups in SN2 type reactions. Explain - using an energy diagram and the Hammond Postulate - why it is "OK" to have a "poor" leaving group in this reaction.
how many moles of CO2 are produced when 5.40 mol of ethane are burned in an excess of oxygen
What must be the atomic mass of the metal M If A sample of the compound MSO 4 weighing 0.1131 g reacts with barium chloride and yields 0.2193 g BaSO4.?
in an organic compound % of carbon is 75.2%,% of hydrogen is 10.75 and % of oxygen is 14.03..Find the empirical formula of compound?
An endothermic chemical reaction with ?E = +41 kJ/mol has an activation energy of +95 kJ/mol. What is the activation energy for the reverse reaction
We add excess Na2CrO4 solution to 16.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.380 grams.
what are the ground state electron configuration of the elements in period 2 of this alternate reality?
A lungful of air (500 mL) contains 4.1% CO2 by volume. How many grams of KO2(s) is needed to remove the CO2 from a lungful of air at STP according to the following reaction?
A compound contains only carbon, hydrogen, and oxygen. Combustion of 0.01068 g of the compound yields 0.01601 g of CO2 and 0.00437 g of H2O. The molar mass of the compound is 176.1 g. What are the empirical and molecular formulas of the compound?
In a typical mass spectrum, a smaller signal is observed at a mass 1 amu higher than the molecular ion peak. Why? A) Due to small impurities in the sample
A 120g sample of an unknown substance was heated from 15oC to 30oC. The substance absorbed 458 joules of energy. What is the specific heat of this substance?
In a calorimeter, 10.0 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed?
The tabulated mass of Cl is 35.45 amu. The two dominant isotopes of naturally occurring Cl are 35Cl (34.97 amu) and 37Cl (36.97 amu).
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