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Explain the first ionization energy for rubidium is +403.0 kJ/mol. Explain how much energy would be necessary to convert 17.1 g of gaseous rubidium to its gaseous +1 monatomic ion at constant temperature?a) 185 kJb) 80.6 kJc) 68.9 kJd) 40.4 kJe) 34.5 kJ
A sample of 0.05567 mole sodium acetate was dissolved into 150.0 mL of water. If 2.00g of NaOH(s) was added to the solution and allowed to dissolve
Given that the partition coefficient for a solute is K in a water-ether solvent extraction system, is it more effective to do one extraction with V mL of ether or three extractions with V/3 mL of ether
a thermodynamic study of DyCl3 determined its standard enthalpy of formation from the following information. Determine delta (subscript f) H for DyCl3 from the following reaction enthalpies
What is the pH of a buffer that is 0.50 M NH3 (pKb = 4.75) and 0.20 M NH4Cl after 50 mL of 0.2 M HCl is added to the 1 L solution
Gaseous NOBr is placed in a closed container at -180 oC, where it partially decomposes to NO and Br2: 2 NOBr(g) 2 NO(g) + 1 Br2(g) At equilibrium it is found that p(NOBr) = 0.008230 atm, p(NO) = 0.004080 atm, and p(Br2) = 0.004130 atm.
A 125 mL sample of dry air at 230 degrees celcius is cooled to 100 degrees celsius at constant pressure. What volume will the dry air occupy at 100 degrees celsius.
the second-order reaction 2 mnco5 mn2co10 has a rate constant equal to 3.0 x 109 m-1 s-1 at 25degc. if the initial
If it requires 41.95 mL of 0.0205 M KMnO4 to titrate a solution made with 0.6128 g of iron ore, what percentage of the ore was iron
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over the course of one year
Suppose the normal freezing point of cyclohexane is 6.55 C. While 0.458 g of benzophenone is dissolved in 15.0 g of cyclohexane, the freezing point is found to be 3.19 C. Explain what is the experimental molar mass of benzophenone. Kf cyclohexane ..
a reaction vessel of volume 20.0 l contains 5.0 mol of nitrogen gas 3.0 mol of hydrogen gas and 2.5 mol of oxygen gas
A reaction has a first order rate constant of 4.31x10-5 s-1 at 25oC and 0.00111 s-1 at 65oC. What is the value of the rate constant at 43oC
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