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Order the following compounds according to their expected lattice energies: LiBr, LiCl, LiI, KI, NaI, Express your answers as chemical formulas. decreasing expected lattice energy separated by commas.
Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH (before any NaOH is added)? What is the pH after 31.9 mL of NaOH are added?
For the reaction given below, the frequency factor A is 8.7 1012 s-1 and the activation energy is 63 kJ/mol.
Determine the concentrations of BaBr2, Ba2 , and Br- in a solution prepared by dissolving 1.62 × 10-4 g BaBr2 in 1.50 L of water.
How much energy (in kilojoules) is required to convert 205 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL?
The activation energy for the following first-order reaction is 318 kJ/mol. N2O5(g)-->2NO2(g)+(1/2) O2(g). The value of the rate constant (k) is 6.65x10^-5 s^-1 at 84 degrees C. What is the value of k at 49 degrees C. (R=8.314 J/mol K)?
Calculate k, Calculate also how long it would take for half of A to react. assume pseudo first order with k'=k[OH-], since [OH-] is in great excess.
Calculate the moles and the mass of solute in 250.0 mL of 6.00 M NaOH.
Calculate the average molecular weight of a gaseous mixture with the following composition on a mole % basis: CH4= 30%, H2= 10% and N2= 60%.
When anisole is nitrated with nitric acid/sulfuric acid, what product or product mixture is formed?
How many grams of methanol must be added to 7.50kg of water to lower its freezing point to -15.0^circ C? For each mole of solute, the freezing point of 1 {rm kg} of water is lowered 1.86 ^circ {rm C}
Calculate the mole fraction of benzene in a solution of benzene and toluene that has a total vapor pressure of 266mmHg at 60 degrees C. Note that both components contribute to the vapor pressure over the solution.
what causes an increase in the solubility of a gas in a solvent in which the gas does not react with the solvent to form a new substance?
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