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Ethanol, C2H5OH, and carbon dioxide, CO2, have approximatelythe same molecular weight, yet carbon dioxide is a gas at STP andethanol is a liquid. How do you account for this difference in physical property?
Find out the value of Kc for the subsequent reaction if the equilibrium concentrations are as follows- (N2)eq=3.6M, (O2)eq=4.1M,
the reaction must progress forward to attain equilibrium. The richer a reaction mixture is in product the higher its Q value is. The value of K does not change as a reaction progresses toward equilibrium.
Formic acid, HFor, has a Ka value equal to about 1.8x10-4. A student is asked to prepare a buffer having a pH of 3.40 from a .10M HFor and a .10M NaFor solution. How many milliliters of the NaFor solution should she add to 20mL of the .10M HFor to..
Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 C. What is the vapor pressure of ethanol at 14 C
59.0 ml of an unknown molarity of sodium hydroxide is combined with45.0 ml of 1.40 m magnesium chloride. what is the
Cupric Sulfate is commonly sold as pentahydrate, which means that there are five moles of H2O for each mole of CuSO4. How many grams of cupric sulfate should be dissolved in a 250 mL volmetric flask to make a solution that is 508.0 ppm in Cu+2?
A sealed balloon is filled with 2.20 L of helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 210. torr and the temperature is -32°C. What is the change in volume of the balloon as it ascends from 1.00..
Name the two types of nucleic acids and where each is found in the cell. Also include the four bases particular to each nucleic acid.
Consider theH2+ ion. Sketch the molecular orbitals of the ion and draw its energy-level diagram. How many electrons are there in the H2+ ion?
In the following reaction, which species is acting as a Brønsted-Lowry base? H2PO4 - + H2O → HPO4 2- + H3O+
Tap water contains calcium ions. Why dont we use tap water tp dissolve the oxalic acid? Show a chemical equation to ilustate your answer.
Vanadium metal crystallizes in a body centerd cubic crystal lattice. The length of a unit is 0.305nm. Calculate the density of vanadium in g/cm^3
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