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Explain which element is the central atom, define how many bonds does the central atom form, is it polar or non-polar, define what the direction of negativity is?
consider the reaction of 5.0g of propane with 10.0ml ofmolecular bromine to form 2,2 dibromopropane and hydrogenbromide. a. look up the molecular weight of propane (44.1) and calculate the moles of propane present before the reaction
The equivalence point of the titration occurs at 23.74mL . Determine the molar mass of the unknown acid.
Dilute the solutions of NaCl, Na2So4 and Na2S are available to seperate the positive ions from each other. In order to effect seperation, the solutions should be added in which order
For a certain chemical reaction, DH is
What is the change in average specific (kJ/kg) enthalpy of this system if the quality increases by 0.71 at a constant pressure of 10 bar?
A constant current 104.0 A is passed through an electrolytic cell having an impure copper anode, a pure copper cathode, and an aqueous electrolyte. How many kilograms of copper are refined by transfer from the anode to the cathode in a 15.5hour pe..
A 635 mL sample of unknown solution reacts completely with to form 19.1g CO2 . What was the concentration of the solution?
Compare the amount of energy released by the complete combustion of 1 gallon of ethanol with the amount of energy released by the complete combustion of 1 gallon of octane.
give one piece of experimental evidence that more than 1 mole of particles is formed when 1 mole of a salt dissolves in
A power plant burns 10^4 kg hr-1 of coal containing 2.5% sulfur. The effluent is released from a single stack of height 70 m. The plume rise is normally about 30 m.
If the slope of the line is y= 0.28x+ 68.71 R^2= 0.962, how does the value of R^2 and the slope relate to the gas law ideals. What is their significance
For a fixed amount of gas at a constant temperature, the volume increases as the pressure what
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