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When 5.0g of CaCl2 was dissolved in 50 ml of water in a coffee cup calorimeter, the temperature of the solution rose from 22.3C to 30.5C. What is the qsoultion in J and what is the qrxn in J?
What is the deltaH in kJ/mol of CaCl2 dissolved?
Consider the titration of 100ml of .100M H2NNH2 (Kb=3.0*10^-6) by .200 M HNO3. Calculate the pH of the resulting solution after the following volumes of HNO3 have been added
The Ksp for BaF2 is 2.4 x 10-5. When 10 mL of 0.01 M NaF is mixed with 10 mL of 0.01 M Ba(NO3)2, will a precipitate form
What mass of oxygen will react with 2.64g of magnesium? 2Mg(s)+O2(g)-->MgO(s)
Calculate the number of moles of solute present in 50.0mg of aqueous solution that is 1.25 molality NaCl.
The first step in the citric acid cycle of food metabolism is reaction of oxaloacetate with acetyl CoA to give citrate. Propose a mechanism, using acid or base catalysis as needed. Oxaloacetate + Acetyl CoA ----> Citrate
calculate the solubility of caoh2 in a 0.469m cacl2 solution at 31degc given that the ksp of caoh2 is 4.96 x 10-6 at
An unknown solid mixture containing benzoic acid,copper(II)sulfate and sand. She added 15mL.of acetone to her sample. Which component of the mixture dissolved in the acetone?
An aqueous copper(II) sulfate solution is electrolyzed for 3 hours with a 1.8 ampere current
Compute the pH of the subsequent solutions. In every case ignore the effects of ionic strength as well as assume that a(i)=c(i)
The density of a piece of ebony wood is 1.174 g/ml. What is the volume in quarts of a 2.1549lb piece of this ebony wood
What weight of A would be removed from the same solution by successive extraction with four portions of 25mL of hexanes? How much hexanes would be required to remove 98.5% of A in single extraction?
the final product was dibenzalacetone. Calculate the theoretical yield of this reaction.
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