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Suppose you have a 90.5-gram sample of lead at 187oC. The sample of lead losses 13.5 calories of heat. The specific heat of lead is 0.038 cal/g oC. What is the final temperature of the sample of lead?
The following reaction is second order in [A] and the rate of constant is 0.039 M-1s-1; A yields B; The concent. of A was 0.30 M at 23 s. The initial concent. of A was ___M
Calculate the final temperature of 39 of ethanol initially at 14 upon absorption of 698 of heat. (density of ethanol =0.789 )
calculate the volume of 19.4 M sulfuric acid that must be added to water to prepare
Find the pH of the equivalence point and the volume (mL) of 0.0740 M KOH needed to reach the equivalence point in the titration
In Horner-Wadsworth-Emmons reaction, a 1,2-disubstituted alkene was produced in which the olefinic protons exhibited at vicinal coupling of 9.0 Hz in the 1H NMR. What is the stoichiometry of the double bond.
3.10 percent of the Br2 undergoes dissociation. Calculate the equilibrium constant Kc for the reaction.
A 750 mL vessel contains 2.50 g of an unknown gas at a temperature of 0 C and pressure 300 mm Hg. A small sample of this gas is removed from the vessel and transferred into a new vessel at 500C and pressure 760 mm Hg. What is the density of gas af..
How would you calculate the quantitative solubility of calcium nitrate (Ca(NO3)2 after saturating the solution, heating, and drying and the precipitate formed weighs 1.3 g
imagine now that one tried to repeat the same measurement but between the time that the 480 cm3 of water was measured
Copper II sulfate dissolveds in water to form a blue solution. What species are present in solution, i.e., what is actually swimming around in solution? write the formulas.
If you are to construct the molecular orbital energy diagram of ScBr, do you think the energy levels will be closer to the atomic orbital energy of Sc or Br. Why.
The membrane has pores equivalent in size to a spherical molecule with a molecular weight (Mm) of 120,000 daltons. The protein solution consists of albumin (40 g/L at Mm = 69,000 daltons), globulins (70 g/L at MW = 150,000 daltons), and fibrinogen..
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