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1) Solid iodine crystals at the bottom of a closed test tube sublime to form iodine vapor. The vapor eventually fills the entire test tube. Use kinetic molecular theory to explain the diffusion of the iodine gas and whether diffusion happens in liquids and solids.
2) Wax, C25H52, is extremely soft and malleable, while table salt, NaCl, is very brittle. Explain why this is so in terms of structure and/or bond types.
Calcium carbide is an intermediate in the manufacture of acetylene. (Calcium carbide was also used for years in mining lamps.) Its chemical formula is CaC2. What is the bond order of the C22- ion
If the enthalpy change for the reaction is 21 kJ/mol, what is the minimum value of the change in entropy for the reaction. Please answer in J/K* mol
Diet cola has a pH of 3.0 while milk has a pH of 7.0. How many times greater is the H+ concentration in the diet cola than the milk
Problem- Iron reacts with Hydrochloric acid to produce iron (II) chloride and hydrogen gas. How many moles of HCl will react with 2.0 moles of Fe
For propanoic acid (HC3H5O2, Ka = 1.3*e-5) find out the concentration of all species present, the PH as well as the percent dissociation of a 0.100 M solution.
Its solubility in urine depends on the relative amount of protonated as well as unprotonated forms. A urine sample was found to have a pH of 5.35. Explain what would be the ratio of the unprotonated form, A- to the protonated form, HA for uric acid..
what is the pH of a buffered sysem made by dissolving 17.42 g of KH2PO4 and 20.41 g of K2HPO4 in water to give a volume of 200.0 mL
Consider the following pair of nucleophiles in CH3OH. Which, a: F- or b: N3- is the better nucleophile. Consider the following pair of nucleophiles in CH3OH. Which, a: CH3S- or b: H2O is the better nucleophile
What is the limiting reactant when ammonium nitrate is synthesized from its elements in their standard states and 1.0 L of all reactants are used at a constant pressure and temperature
a hot piece of silver metal 552.0gin mass was dropped into acup containing 332.8g of cold water. the final temperature
what is the theoretical yield of nitrogen in grams from part (a)? c) if the actual yield of nitrogen in the reaction in part (a) is 30.3g calculate the percent yield.
Consider the standard cell at 25C based on the following half-reactions. Pb^2+ + 2e^- --> Pb E=-0.13V Zn^2+ + 2e^- --> Zn E=-0.76V To the standard cell, OH-, is added to the zinc compartment causing precipitation of Zn(OH)2. After precipitation is..
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