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What volume of acetylene at 25 degree C and 1.01 atm is generated by the complete reaction of 2.49 g of calcium carbide? What volume would this quantity of acetylene occupy at STP?
A cylindrical glass tube 15.0 cm in liength is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g.
Determine the empirical formula and draw a possible structure for an organic compound with the elemental composition
Show that the energy transferred as heat when the pressure on an incompressible liquid or solid is increased by delta P is equal to -alphaTVdP. Evaluate q when the pressure acting on 100cm cubic of mercury at ) degre celcius is increased by 1.0kba..
depending on the type of chemical reaction molecular bromine br2 can be a source of br br- or brmiddota. provide a
Calculate the partial pressure of each, the total pressure and the composition of the liquid solution.
Fluoride (F-) is toxic element (anion) that can be lethal at 0.20 g/70kg of body weight. But because F- at low levels (1ppm) aids in healthy teeth, municipal water sources normally add this level of fluoride.
What is the fraction of NTA present after HT2- has been brought to equilibrium with solid PbCO3 at pH 7.00, in a medium in which [HCO3-] = 1.00E-3 M?
Consider the neutralization reaction that takes place when phosphoric acid reacts with aqueous potassium hydroxide
When we go down a group, electron affinity should become more positive (less energy released), since the electron is added at increasing distances from the nucleus.
What is the pH of the buffer that results when 11 g of NaCH3CO2 is mixed with 85 mL of 1.0 M CH3CO2H and diluted with water to 1.0 L? (Ka of CH3CO2H = 1.8 ´ 10-5)
Determine an apparent radius of the tungsten (VI) ion assuming the oxide ion radius is 1.40A. Suggest a reason that the calculation might give a result that has no physical significance.
A sample of a liquid from an unlabeled bottle was subjected for analysis: MS showed that M+ has an m/z of 89 and IR displayed bands at 2995-2840 cm-1, and 1562, and 1425. Identify the functional group in the molecule and provide 2 possible structu..
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