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explain why the boiling point of Br2 (59 degrees C) is lower than that of iodine monochloride, ICl (97 degrees C), even thought they have nearly the same molar mass A: Br2 is larger the ICl B: ICl is ionic C: the molar mass dependence of a liquid's boiling point is not an absolute rule, and it should not be applied to all compounds D: it is impossible to say without further informations E: the molar mass is not identical, the molar mass of Br2 is only 159.80 g/mol compared to 162.35 g/mol for ICl F: ICl is polar while Br2 is nonpolar
Pure tungsten melts at 3370 C . The liquid has a vapor pressure of 5 torr at 4337 C and of 60 torr at 5007 C calculate the normal boiling point of tungsten.
In some industrial processes, sulfite is added to remove dissolved O2 to prevent corrosion of pipes. Write the balanced overall chemical reaction for reduction of dissolved O2 by sulfite (SO32-).
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution. Its pH was measured as 4.50 on a meter.
cyclohexane-toluene mixture, and then obtain IR spectra for each fraction. How would the IR spectrum of the first 1 mL fraction look different from that of the last 1 mL fraction?
Determine how many moles of Trisodium phosphate would be required to react with 4.0mol of Silver Nitrate?
The decomposition of 3.32 g CaCO3 yields 1.24 g CaO. What is the percent yield of this reaction? CaCO3(s) -> CaO(s) + CO2(g)
what is the presentage compostition of both of the components, which is the limiting reagent (if there is) and what is the theoretical yeild of each of them.
A solution contains .229 M sodium acetate and .157 M acetic acid. What is the pH of this solution. How is Ka calculated
The individual standard electrode potentials do not indicate anything about tendency to gain electrons. The cell potential of the entire cell does.
what adjustment should be made to the mobile phase to bring the compound off sooner? why?
The carbon-14 activity of some ancient Native American corn was found to be 7.0 disintegrations per minute (dpm) per gram of carbon. If present-day plant life has 16 dpm per gram of carbon
What kinetic energy must the electrons have in order to resolve a protein molecule that is 3.80 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
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