Describe how you would prepare barium hydroxide solution
Describe how you would prepare 1.00L of 0.75 M barium hydroxide solution starting with 6.00 M barium hydroxide solution.
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An ice cube is placed in a beaker of water at 20 c. the ice cube partially melts and the temp of the water is lowerd to 0 c at this point both ice and water are at0 and no further change is apparent.
Consider the following equation, for which Keq = 1.4e+83 at 25oC. What is the value of Keq for the reaction H2(g) + 1/2 O2(g) 1/2 H2O(l)?
A 7.00% solution by mass of an enzyme in water has an osmotic pressure of 20.0 torr at 291 K. Calculate the molar mass of this enzyme.
Hydrochloric acid is sold as a concentrated aqueous solution. If the molarity of commercial HCL is 12.0 and its density is 1.18g/cm3 Calculate the weight percentage of HCl in the solution.
What mass of sucrose should be combined with 537 mL of water to make a solution with an osmotic pressure of 8.55 atm at 290 K ? (Assume the density of the solution to be equal to the density of the solvent.)
Based on the average number of moles of IO3- in your samples, and the initial volume of those samples, what is the solubility of Ca(IO3)2 in mol/L of the saturated solution in pure water?
The partition coefficient between ligroin and water for solute A is 4. What weight of A would be removed from a solution of 12 g of A in 100 mL of water by a single extraction with 100 mL of ligroin?
Find the heat of combustion in kJ/g for each gas. These values are valid at 25°C, where the water produced by the reaction is in the liquid state.
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Explain the purpose and potential benefits of conducting a formative and/or summative evaluation study
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