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a solution consisting of isobutyl bromide and isobutyl chloride is found to have a refractive index of 1.3931 at 20 degrees celsius. The refractive indices at 20 degrees celsius of isobutyl bromide and isobutyl chloride are 1.4368 and 1.3785. determine the molar composition in percent of the mixture by assuming a linear relation between the refractive index and the molar composition of the mixture?
Calculate the final temperature when a 22.0 gram sample of ice at 0oC is placed into a styrofoam cup containing 113 grams of water at 77.1 oC. Assume that there is no loss or gain of heat from the surroundings.
If 49.0g of H3PO4 is reacted with excess KOH, determine the percent yield of K3PO4, if you isolate 49.0g of K3PO3.
If 4.00 g of the unknown compound contained 0.133 mol of C and 0.267 mol of H, how many moles of oxygen, O, were in the sample?
What is the role of sodium sulfite? How does it work? Please use an equation to explain this. Why was the work-up step so important in this experiment? What can be found in the top layer, and the bottom layer in the extraction step?
A 24.9 mL volume of HCl reacts completely with 55.0 mL of aqueous Na2CO3. The reaction is as follows:2HCl (aq)+ Na2CO3(aq)-> CO2(g)+H2O(l)+2NaCl(aq)
What volume will 454 grams (1 lb) of hydroigen occupy at 1.05 atm and 25 C.
Calculate the total volume of gas (at 124C and 758mmHg) produced by the complete decomposition of 1.45 kg of ammonium nitrate.
Calculate the molar concentration of OH- ions in a 0.550 M solution of hypobromite ion (BrO-; Kb=4.0 x 10^-6). What is the pH of this solution?
the pressure exerted on a 240 mL sample of hydrogen gas at a constant temperature is increased from .428 atm to .724 atm. What will the final volume of the sample be.
Under certain conditions, the formation of ammonia from nitrogen and hydrogen has an 8.12% yield. Under such conditions, how many grams of NH3 will be actually produced.
Write a balanced chemical equation for this reaction when Ferrophosphorus reacts with pyrite making iron (ll) sulfide and a compound that is
an 8 g sample of a copper ore was dissolved in an acid solution and then reacted with NO3- from a KNO3 salt solution. it required 71.5 ml of a .155 M KNO3 solution to fully react the copper in the ore sample.
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