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Explain which of the subsequent three compounds is the most likely to be amenable to purification by sublimation- polyethylene, menthol, or phthalic acid? Explain why one is more amenable than the other two?
Determine the percent yield for the reaction between 3.74g of Na and excess O 2if 5.34g of NaO2 is recovered
The change in enthalpy Delta H for a reaction is -39.6 kJ/mol. The equilibrium constant for the reaction is 4.4×103 at 298 K.What is the equilibrium constant for the reaction at 635 K?
How much heat in kJ is absorbed when 63.7 g H2O at 100C is converted to steam at 100C?
Using the Arrhenius concept of acids and bases, identify the Arrhenius acid and base in each of the following reactions: 2KOH(aq) + H2SO4(aq) ---> K2SO4(aq) + 2H2O(l)
A system receives 93 J of electrical work, performs 227 J of pressure-volume work and releases 155J of heat.What is the change in Internal energy of the system?
What is the cell potential for the following standard cell? Cr(s) / Cr(NO3)3 // SnCl2, SnCl4 / Pt(s) b) Do you expect this cell to have a - or + Go
The methane (CH4) gas in a 10.00L container at 305oC and 101 kPa pressure was burned in excess oxygen. What is the mass of carbon dioxide added to the atmosphere from this combustion
a certain first-order reaction has a rate constant of 7.50times10-3 at 45 . how many minutes does it take for the
What will the final concentration be if I dilute 250 mL of 0.10 M lithium acetate solution to a volume of 750 mL
A mercury mirror forms inside a test tube by the thermal decomposition of mercury(II) oxide. 2 HgO(s)-----> 2 Hg(l) + O2(g) delta H rxn = 181.6 kJ (a) How much heat is needed to decompose 505 g of the oxide
Catalyst works by lowering action barrier of rate limiting step. In a 1st order reaction, concentration of reactant is doubled then rate of reaction is doubled.
The specific heat of lead is 0.0380cal/g degree celcius. If 47.0 calories of energy raised the temperature of a lead sample from 28.3 degrees celcius to 30.1 degrees celcius.
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