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(I) Use the following data to calculate ΔSsub for white tin, Sn (s, white).
Compound Tm (K) ΔHfus (kJ/mol) Tb (K) ΔHvap (kJ/mol)
Sn (s, white) 505.1 7.03 2875 296.1
Include the units.
(II) Calculate the change in entropy when 3.50 mol of helium are compressed isothermally to five times its original pressure.
(III) Calculate the change in entropy when 3.50 mol are contained on the right hand 1/5 of a large container compared to when the stopcock is opened and there are now 5 equal volume sections available to the gas (W = 53.50N). (N= Avogadro's number). You do not need to include units for this one.
The value of ?Go for the reaction, N2(g) + 3 H2(g) 2 NH3(g) is -32.90 kJ at 298 K. Calculate the value of ?G in kJ at 298 K if the partial pressures of N2, H2 and NH3 are 9.139, 8.009, and 9.718 atm respectively.
Using a solution of (HOC 2 H 2 )3NHCl, solution in which Kb, ((HOC 2 H 2 )3N) = 5.9 × 10 -7 then determine what is the pH of a 0.010 M triethanolammonium chloride,
Problem- Consider the structures of aspirin and methyl salicylate. Which type of NMR (H or C) would be most useful to distinguish the two molecules? Explain why.
Problem- Calculate the pH of the cathode compartment for the following reaction given Ecell = 3.01 V when Cr3+= 0.16 M, Al3+= 0.29 M, and Cr2O72- = 0.55 M.
Arrange the following solvent systems in order of increasing polarity: chloroform, 9:1, and 1:1 cyclohexane-toluene.In which would you expect the highest Rf value for a given compound
How much heat is generated when 1.57 g of lead changes in temperature from 104 Kelvin to 217 Kelvin? Report your answers in Joules.
The density of the hydrogen peroxide solution is 1.01 g/mL and the solution contains 3.40% H202 by mass. The vapor pressure of water at 24C is 22 mmHg. Based on this data and information calculate the molar volume at STP.
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 72% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 multiplied by 10-12.]
Develop an interactive computer program that determines either the system's coefficient of performance or its cooling capacity in tons.
explain why the swirling of a solution and its drying agent hastens the drying
What is the molarity of the resulting solution when 28.249 g of Mn(ClO4)2 · 6 H2O are added to 550.0 mL of water?
what is the value of ni for an electron that emits a photon of wavelength 95.04 nm when it returns to grount state in a th H atom
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