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Butylated hydroxyanisole (BHA) is used as an antioxidant in margarine and other fats and oils; it prevents oxidation and prolongs shelf life of the food. What is the molar mass of BHA if 0.640 grams of the compound, dissolved in 25.0 grams of chloroform, produces a solution whose boiling point is 62.22 degrees Celsius? The normal boiling point of chloroform is 61.70 degrees Celsius and Kbp for chloroform is +3.63 degrees Celsius/m.
Ethene C2H4 can be halogenatd by the following rxn: C2H4+X2=C2H4X2 where X2 can be Cl2, Br2 A) Use the thermodynamic data given to calculate Delta H for the halogenation reaction by Br2 at 31degree celcius.
The Ksp of the imaginary compound AB is 1.6 * 10^-53. How many liters of water should it take to dissolve one molecule of this compound
A 50.0 mL sample containing Ni+2 was treated with 25.0 mL of .050 M EDTA to complex all of the Ni+2 and leave some excess EDTA in solution. the excess EDTA was then titrated with .050 M Zn+2, requiring 5.00 mL to reach equivalence point
a 350 ml gas piston is filled with .250 moles of gas at standard temperature and pressure. the pistonpushed into the
Calculate the molarity of an aqueous solution that is 5.20% by mass CaCl2, given that the density of the solution is 1.19 g/mL
A 2.00 g sample of silver (Ag) was heated with excess sulfur (S) to produce 2.30 g of a "silver sulfide". Calculate the empirical formula of this sulfide, AgxSy, where x and y are the smallest whole-number moles of Ag and S, respectively. (remembe..
determine the end value of n in a hydrogen atom transition, if the electron starts in n=2 and the atom absorbs a photon of light with a frequency of 4.57X10^14 Hz
based on the experament of bromination of acetinilde how many equivalents of CAN of 0.00555 moles relative to acetanilide moles of 0.00381 show your calculation
a beaker containing 250g of water is heated from 23 degrees C to 100 degrees C. what is the heat gain in calories?
Equal volumes of the following pairs of solutions are mixed. Which pair will produce a buffer solution
Why are the Kr---Kr and intermolecular Br---Br distances in the solid form of the two elements practically identical. How would you expect the Br---Br distances in solid CBr4 to be related to the above distances
determine that how many moles of molecular hydrogen are used per mole of the precatalyst in order to convert it
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