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What is the molality of a solution prepared by dissolving 72.0 g of ethylene glycol, HOCH2CH2OH, in 1.55 L of water? Assume the density of water is 1.00 g/mL.
What is the maximum Mg2+ concentration that will avoid precipitation in a solution of pH = 10
How do I calculate the concentration of the lycopene solution in the spectrophotometer cell before isomerization, given that the molar absorptivity of lycopene at 471 nm is 1.86 x 10^4.
how much heat in is required to warm 10.0 of ice initially at -11.0 to steam at 111.0? the heat capacity of ice is
While forming monatomic ions, halogens gain electrons to become isoelectronic with the next noble gas. Explain what is the charge on the iodide ion. Define which is the correct formula for nickel (II) nitrate
What is the volume required of a 0.2 M KOH solution to reach the half equivalence point in titrating 25 mL of a 0.1 M HCO2H.
How many minutes will it take to plate out 16.22 gram of Al^3+ using a current of 12.9 amps in an electrolyic cell. What current is required to deposit aluminum at a rate of 1.25g/min
At 250C, the equilibrium constant Kp for the reaction PCl5(g) PCl3(g) + Cl2(g) is 1.80. Sufficient PCl5 is put into a reaction vessel to give an initial pressure of 2.74 atm at 250C. Calculate the pressure of PCl5 after the system has reached equi..
A refrigeration tank holding 5.00 L of Freon gas (C2Cl2F4) at 25°C and 3.00 atm pressure developed a leak. When the leak was discovered and repaired, the tank had lost 76.0 g of the gas.
Make a drawing, based on the kinetic-molecular theory and the ideas about atoms and molecules presented in this chapter, of the arrangement of particles in each of the cases listed here. For each case, draw 10 particles of each substance.
Consider ATR sampling using a trapezoidal ZnSe crystal. In the mid-infrared region, refractive indices for ZnSe and water are approximately 2.4 and 1.3, respectively. What is the penetration depth (?m) for IR radiation of 1600 cm-1 if it strikes t..
an ore of barium contains baco3. a 1.224 g sample of the ore was treated with hcl to dissolve the baco3. the resulting
calculated the catalytic efficiency (Kcat/Km) of alcohol dehydrogenase for ethanol to be 90.7 1/M s. However, the maximum possibility for an enzyme is 10^8 -- 10^9 1/M s, so my calculated value seems awfully low. Can anyone give insight as to whet..
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