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1.) It took Beethoven (the composer, not the dog from that movie) 4.5 years to compose the Ninth Symphony (this may not be true, I made it up). How many decades did it take him?
2.) Michael bought a pumpkin that had a mass of 18,165 grams. What was the mass of the pumpkin in hectograms?
3.) Oscar had 0.874 grams of trash in his house. How many centigrams of trash did he have?
Assuming the solution has a heat capacity of 4.18 J/°Cg and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol."
Indicate the approximate location (cm-1) in the IR Spectrum where you would expect to see one or two absorptions that distinguish the compounds in Diethyl Ether.
A sample of krypton gas at 75.0 psi and 100 degrees Celcius expands from 0.100 L to 0.450 L. If the temperature remains constant, what is the final pressure
28.0mL of 0.250M HNO3 + 53.0mL of 0.320M KOH, What is the concentration of H+ or OH- ions in excess after the reaction goes to completion
An electrochemical cell is constructed with a zinc metal anode in contact with a 0.052 M solution of zinc(II) nitrate and a silver cathode in contact with a 0.0042 M solution of silver(I) nitrate. What is the emf of this cell at 5°C
Consider the following equilibrium process at 700°C. 2H2(g)+S2(g) 2H2S(g) Analysis shows that there are 2.50 moles of H2, 1.35 10-5 mole of S2, and 8.70 moles of H2S present in a 12.0 L flask. Calculate the equilibrium constant Kp for the reactio..
calculate the standard free energy change for the following metabolically important enzyme-catalyzed reaction at 25degc
If the total number of electrons in a homonuclear diatomic molecule is 13, what is the overall bond order of the molecule
Assuming STP, how many liters of carbon dioxide are produce when 5.74 g of CaCO3 reacts with an excess of H3PO4
In this experiment we used ortho-vanillin and p-toluidine to form the imine. Why does the reaction mixture turn into a liquid when the ortho-vanillin and p-toluidine are initially mixed? What is the name or melting point of the product?
What is the nickel ion concentration in a solution prepared by mixing 389 mL of 0.428 M nickel nitrate with 467 mL of 0.323 M sodium hydroxide
One side of the membrane representing 1/3 of the tank is filled with nitrogen ( may be assumed to be an ideal gas) at 4.1 bar and 315.6 K. The other side of the membrane is evacuated. The membrane ruptures and the gas fills the entire tank. Heat c..
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