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A coffee cup calorimeter containing 100 ml of H2O is used. The initial temeperature of the calorimeter is 23C. If 2.40 g ofCaCl2 is added to the calorimeter, What will be the final temperature of the solution in the calorimeter? The heat of solution ΔHsoln of CalCl2 is-82.8kJ/mol.
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.120 M HCIO (aq) with 0.120M KOH (aq)
The standard Gibbs-free energy of a system is related to its equilibrium constant through the following equation.
A solution contains 2.2 × 10-3 M in Cu2+ and 0.33 M in LiCN. If the Kf for Cu(CN)42- is 1.0 × 1025, how much copper ion remains at equilibrium
craw the skeletal structure where each atom obeys theoctetduet rule and no atom possesses a formal charge for
Write equations using 1 butene to illustrate the reactions with br2 in dichloromethane, acetone and potassium permanganate, and sulfuric acid
methanol a potential replacement for gasoline can be made from h2 and co by reactions co 2h2 - ch3oh. how will this
Provide the reagents necessary for the following syntheses. More than one step may be required. (a) (b) (c) (d) (e) (f)
Determine what percent by weight of sodium carbonate does it contain If the specific gravity of the sodium carbonate solution = 1.25,?
a sealed balloon is filled with 1.70 l of helium at 23degc and 1.00 atm. the balloon rises to a point in the atmosphere
calculate the number of molecules present in each of the following samples.
Starting with aziridine, and using 1) PhCH2Br; 2) Na2CO3; 3) PhCH2Br as reagents, what are the mechanisms and intermediates leading to a final product
you and another student were each given an unknown compound. both samples contained colorless material. you each used
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