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(a) Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below. HCl is a stronger acid than H2S because Cl is more electronegative than S. H3PO3 is a stronger acid than H3PO4 because it has fewer oxygens surrounding the central P atom. H2C2O4 is a stronger acid than HC2O4- because it has more acidic hydrogens. HI is a stronger acid than HCl because I atoms are larger than Cl atoms. H3AsO4 is a stronger acid than HAsO42- because it has more acidic H atoms. AsH3 is a stronger acid than HBr because As is larger than Br.
at 400 K, the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kPa, was 9.71 Pa/s when 10.0 % had reacted and 7.67 Pa when 20.0 % had reacted.Determine the order of reaction.
To a 100 mL volumetric flask are added 1.00 mL volumes of three solutions: 0.0100 M AgNO3, 0.220 M NaBr, and 0.100 M NaCN. The mixture is diluted with deionized water to the mark and shaken vigorously.
What ions have a larger radius than their parent atom. What is the effect on atomic properties of increasing nuclear charge
What is meant by the term lower in energy? Which is lower in energy, a mixture of hydrogen and oxygen gases or liquid water? How do you know?
Describe the major absorption bands in the IR spectrum - indicate the bonds responsible for those peaks which prove you have synthesized isopentyl acetate and that it is an ester.
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?
Calculate the volume of concentrated sulfuric acid, containing 98% H2SO4 by mass, that would contain 40.0 g of pure H2SO4.
A particular reactant decomposes with a half-life of 145 s when its initial concentration is 0.310 M. The same reactant decomposes with a half-life
Describe the pH of a buffer solution consisting of 100 mL containing 0.1M CH3COOH and 0.125M CH3COO- , both before and after addition of 10 mL of 0.25M HCl. Ka = 1.8 x 10-5.
The volume of a cylinder in an auto is 0.44L. the cylinder is filled with a gasoline and air mixture at 1.0 atm and then is compressed to 0.073L prior to ignition.
You mix 55 mL of 1.00M silver nitrate with 25 mL of 0.81 M sodium chloride. What mass of silver chloride should you form?
Tell me if an induced current would exist, if you had a coil and a magnetic field that both were in motion at the same time.
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