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Question: Assume that the heat lost by the surface is gained by ethyl chloride. What enthalpies must you consider if you were to calculate the final temperature of the surface?
write lewis structures that obey the octet rule for each of the following molecules and ions. in each case the first
Write a complete, balanced equation for this double displacement reaction. (Hint: the solid is a compound of Ni ions and hydroxide ions.) Don't write the net ionic equation but rather the complete form with neutrally charged compounds with all of ..
For a certain reaction delta H=-76.8 and delta S=-217 If n=3 calculate E for the reaction at 25 degrees.
Calculate the mass of KI in grams required to prepare 8.00 multiplied by 102 mL of a 1.00 M solution
calculate the number of grams of sulfuric acid in 0.500 l of battery acid if the solution has a density of 1.28gml and
A casting of an alloy in the form of a disc weighed 50 g. The disc was 0.25 inches thick and had a circular cross section of diameter on 1.380 inches. What is the density of the alloy
A 17.5 g sample of C2H6 (Mm = 30.07 g I mol) was maintained in a 98.6 L vessel at 290.6 K. It was compressed isothermally and reversibly until its volume had reached 12.5 L.
This had to be done until the wash fluid that I removed after each wash registered as not acidic on a Congo red test paper. The product was then recrystallized, etc. What was the purpose of the wash. Why was it necessary to make the product less ac..
Calculate the vapor pressure at 20?C of a solution containing 3.641 g of naphthalene in 22.7 g of chloroform (CHCl3). Naphthalene (C10H8) has a low vapor pressure and may be assumed to be nonvolatile. The vapor pressure of chloroform at 20?C is 15..
Biochemistry homework:draw the structure of pGC deoxyribonucleic acid in the ionic form that would predominate at pH 7.0
The solution density = 1.013 g/mL and suppose that the density of pure water =1.00 g/mL. Determine the molality of this solution?
A solution of Na3PO4 is added dropwise to a solution that is 0.0494 M in Ag+ and 0.00318 M in Cu2+. The Ksp of Ag3PO4 is 8.89e-17. The Ksp of Cu3(PO4)2 is 1.4e-37. (a) What concentration of PO43- is necessary to begin precipitation
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