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Since 1976, Brazil has made it mandatory that all automobiles run on a blend of 25% ethanol and 75% hydrocarbon based petroleum. This blend is called e25. Using the total yearly production of bioethanol (22.9 billion) by the U.S, How many gallons of E25 could be made by dilution? About how many cars does this fill at 13.0 gallons per car?
You are concentrating a solution containing a polypeptide of modest molecular weight by pressure filtration through a membrane. The solute concentration on the feed side of the membrane is 0.10 M and the temperature is 25°C.
In a study of hydrogen halide decomposition, 0.200mol hydrogen iodide is placed in a 2.00L flask and the temperature raised to 4530C. At equilibrium, [HI] = 0.078M. Calculate Kc.
Can someone explain how to determine if the cis or trans isomer is optically active for [Cr(NH3)2(ox)2]-And please show the isomers drawn so i can see if i have drawn them correct.
Given the following experimental data, find the rate law and the rate constant for the reaction:
We place 1.32 mol PCl5 in a 1.0 L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask
At this temperature, calculate the number of moles of NO2(g) that must be added to 2.76 mol of SO2(g) in order to form 1.20 mol of SO3(g) at equilibrium.
A 12.00 milk chocolate bar is found to contain 9.200 of sugar. What will be the amount of sugar in milligrams if the size of the chocolate bar is reduced from 12.00 to 5.000
reaction begins only after a collision between the reactants. So this is an endothermic reaction, and most reactions occur when two reactants collide with each other.
What percentage of the original mass remains in a radioactive sample after two half-lives have passed. After three half-lives. After 3.5 half-lives
a cylindrical glass tube 15.0 cm in length is filled with ethanol. the mass of ethanol needed to fill the tube is found
in the synthesis of divanillin the first step in the mechanism of this reaction involving vanillin is the formation of phenoxy radical by abstraction of the phenoic H atom
Atoms of different elements also have different average masses, just like kernels and marbles. Use the mass values from a periodic table to answer the following questions.
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