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For each reaction, identify the acid-base conjugate pairs. Then rank all reactions in order of increasing tendency for the reaction to go to completion (to the right).
a) CH3COO- + HCN <=> CH3COOH + CN-b) CH3OH + Br- <=> CH3O- + HBrc) HSO4- + NH3 <=> SO4^2- + NH4+d) HClO4 + CH3NH2 <=> ClO4- + CH3NH3+
Some alloys of early and late transition metals (e.g., ZrPt3) have much higher enthalpies of vaporization (per metal atom) than either of the pure metals
Mount Whitney in California is the highest point in the lower 48 states and is within 150 miles of the lowest place in North America. The normal pressure at the summit is 440mm Hg.
The temperature of 55.6 g of a material decreases by 14.8C when it loses 3080 J of heat. What is its specific heat?
Trehalose is the major sugar in the hemolymph (blood) of many insects. Insects have open circulatory systems that bathe the tissues of the animal.
If your electricity comes from a 33% efficient nuclear power plant, how many Pu-239 nuclei are produced as a result of your leaving the light on?
A mass of mercury occupies 0.950 L. What volume would an equal mass of ethanol occupy? The density of mercury is and the density of ethanol is 0.789 g/mL.
the hypothetical metal Q with atomic mass of 68.33 has two isotopes ^67Q (isotopic mass 66.945 amu) and ^69Q (isotpes mass 68.958 amu) calculate the abundance of ^67Q in %
6 moles of a mixture that contains 0.7 mole fraction propane (C3H8) with the remainder methane (CH4). It is burned in air with a 10% excess of oxygen.
A 354 gram sample of C6H12O6 has a pressure of 648 torr at 31°C. What is the volume (L) of the container?
Assume that the density of the mixed solutions is 1.00 g/mL, that the specific heat of the mixed solutions is 4.18 J/(g celcius), and that no heat is lost to the surroundings. The deltaHrxn for the neutralization of NaOH with H2SO4 is -114 kJ/mol ..
Given a pure sample that is known to be either pure benzoic acid or 2-naphthol, describe a procedure you might use to determine the identity of the sample, assuming spectroscopy is not available.
Imagine that you have a 6.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
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