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Potassium hydroxide is used to precipitate each of the cations from their respective solution. Determine the minimum concentration of {\rm KOH} required for precipitation to begin in each case.
distinguish between an organic molecule that is dextrorotary and one that is levorotary.
A solution is prepared by dissolving 0.16 mol of acetic acid and 0.16 mol of ammonium chloride in enough water to make 1.0 { L} of solution. Find the concentration of ammonia in the solution.
Alkanes are relatively inert except for two reactions, combustion and radical halogenations. Show all the products, intermediates and the flow of electrons in the following reaction.
1) Why is it important to clean up any spills immediately, wash hands frequently, and wash glassware thoroughly when working with crystal violet solutions?
When the following equation is balanced using the smallest possible integers, what is the number in front of the substance in bold type. Na2S2O3 + I2 ? NaI + Na2S4O6
A hypothetical molecule, X-Y, has a dipole moment of 1.90 D and a bond length of 169 pm. Calculate the percent ionic character of this molecule.
How would a calculated specific heat be affected if the metal cools before it is transferred to the water. Would it be higher, lower or unaffected. Explain
What information does a chemist obtain from the mass spectrum of a compound?
a reaction mixture initially contains a br2 partial pressure of 765 torr and a cl2 partial pressure of 730 torr at 150
You standardize your NaOH solution by titrating a known quantity of sulfamic acid (H2NSO3H) standard. It requires 43.77 mL of the solution to reach the endpoint with 0.4855 g of sulfamic acid. What is the concentration of your NaOH solution
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4
the value of kf for cyclohexane is 20.0degcm and its normal freezing point is 6.6degc. a mass of 1.604 g of a waxy
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