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2-chloro-butane is obtained when 1-butene and 2-butene react with HCl. Which has the greater free energy of activation and why?
solution made from 6.50g of an unknown compound in 27.8g of diphenyl has a molality of .195m. Calculate the molar mass of the unknown.
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32 P, how many grams will remain after 112 days?
The collision (frequency) factor remains the same, by how much an enzyme lower the activation energy of the reaction in order to achive 1 x 10 ^5 fold increase in the reaction rate
A 25.0 mL sample of river water was titrated with 0.0010 M Na2Cr2O7 and required 8.3 mL to reach the end-point. What is the chemical oxygen demand, in milligrams of O2 per liter, of the sample?
Calculate the volume of water required to reconstitute (also referred to as solubilize) the entire contents of the vial of ovalbumin to a final concentration of 6.1 mM.
Stripping voltammetry is a trace electrochemical technique in which the current is linearly proportional to concentration. A solution of 1.0x10-7 M Pb(II) gave a current of 0.139 mA.
when a mixture of these two gases are compressed to a smaller volume, which way does the reaction shift to? the reaction is originally at 588 kelvins and has an equilibrium constant of "k"=0.0180
Construct the lewis structure model for the ionic compound potassium chloride using the following steps.
A solution is prepared by dissolving 159 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
While preparing oxalate buffer technician by mistake added 0.1 M of CaC2O4 (pKsp=7.9) to 0.2 M solution of oxalic acid (pKa's 1.25; 4.26). What is the pH of this solution? Is it a buffer
The total surface area of the earth consisting of forest, cultivated land, grassland, and desert is 1.49 x 108 km2 . Every year, the mass of carbon fixed by photosynthesis by vegetation covering this land surface according to the reaction 6CO2
If you used 0.165mL of acetic anhydride, and 0.167g of p-aminophenol what was the limiting reageant? How many moles of the non-limiting reageant remained after the reaction was complete
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