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In order to judge the effect of solvent on the interaction between ions in solution, calculate the potential energy in kJ/mol of interaction between a sodium ion and a chloride ion, each treated as a point charge of + or -e, separated by 9 Angstroms in water. The dielectric constant of water at room temperature is 78.3. Hint: your answer will come out negative because the interaction is attractive. Also, you'll need to multiply your number by Avogadro's number to get it on a per mole basis.
what is the total number of liters of O2 at STP needed to produce 6.0 times 10^23 molecules of H2O.
What are the concentrations of HSO4-, SO42-, and H+ in a 0.27 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 10-2.).
The k1 is on top of the right pointing arow and k2 is below the left pointing arrow and the arrows are like they are in equilibrium. The k3 is above the lone arrow in the second reaction. In the find expression part the N02 is a subscript of P
The structures of the disulfides (MS2) show an apparently unusual trend, proceeding from left to right across the transition series. On the left side (TiS2, ZrS2, MoS2, etc.)
An odorous gas emitted by a hot spring was found to diffuse 2.92 times slower than helium. What is the molar mass of the emitted gas.
The half-life for the reaction at 550 C is 81.3 seconds. How long does it take for 78.5% of a phosphine sample to decompose?
a hybrid electric vehicle, has an EPA gas mileage of 52 mi/gal in the city. How many kilometers can the Prius travel on 15 liters of gasoline?
MgNH4PO4 6H2O loses H20 stepwise as it is heated. Between 40c and 60c the monohydrate is formed and above 100c the anhydrous material is formed. What are the phosphorus percentages of the monohydrate and of the anhydrous material?
A certain substance has a heat of vaporization of 29.00 kj/mol. At what Kelvin temperature will the vapor pressure be 3 times highe
If 495g NaOH is dissolved in a final volume of 20.0 L, what is the molarity of the solution.
consider a flask at 298 K with an air pressure of 738 mmHg to which some n-butanol is added. If the measured pressure after the addition is 745 mmHg, what is the vapor pressure of n-butanol at 298 K?
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 74% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9* 10-12.]
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