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Calculate the amount of heat required to completely sublime 18.0g of solid dry ice (CO2 ) at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 kJ/mol
Calculate the pH at the equivalence point for the titration of 0.100 M methylamine
A student makes 215 mL of a 3.15M solution of Na2SO4. he then forgets to seal it and some water evaporates overnight. When he comes back int he morning, the volume of the solution is only 205 mL. What is the molarity of the solution after the wate..
Derive the symmetries of the ligand σ orbitals for an octahedral complex. Draw the MO diagram for Cr(CO)6 showing σ bonding only.
What is the coefficient of H2O when the following equation is properly balanced with smallest set of whole numbers?
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 268 {rm torr}. Pure pentane and hexane have vapor pressures of 425 {rm torr} and 151 {rm torr}, respectively, at room temperature. What i..
working solution so you add five spatula tips full of salt to a large test tube and then make your working solution with only 5mL of deionized water.
A flask contains 0.330 mol of liquid bromine, Br2. Determine the number of bromine molecules present in the flask.
If a 50.0 g object needs 1,145 Joules to increase its temperature by 10.0 oC, what is its specific heat capacity?
choose from among the following: disulfide bond, salt bridge, hydrogen bonding or dispersion forces. A) glutamic acid and lysine B) tyrosine and lysine C) Ile and Ala D) two cysteines
what is the change in enthropy for this process in kJ/K*mole. The atomic mass of oxygen is 16.00.
How many grams of calcium chloride would you dissolve in water to make a total .111 M calcium chloride solution with 200 mL final volume?
Once the solvent front reaches the top of the chromatographic paper,solvent begins to evaporate from the top edge of the paper, and the remaining solvent continues to move up the paper.
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