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Is the lone pair in cycloheptatrienyl anion in sp3 orbital? If so how is it antiaromatic when it does not have an uninterrupted p-orbital?
If 57.0 of solution is needed to precipitate all the sulfate ion in a 756 sample of , what is the molarity of the solution?
Determine how long will it take for the concentration to decrease to 0.13 mol/L express your answer in seconds.
A mixture moistened with water and placed it in a desiccator (drying chamber) with silica gel to dry at 22C. the silica gel absorbed water vapor as the mixture dried.
The below table lists pressure and volume measurements for air in a cylindrical piston of an air compressor. The variables may be assumed related by: PV^k=C
Calculate the pH of a solution made by adding 40. g of sodium acetate, NaCH3COO, to 21 g of acetic acid, CH3COOH, and dissolving in water to make 700. mL of solution
The buret is filled with the NaOH titrant and the initial volume reading is immediately recorded without waiting the recommended 10-15 seconds.
which are hybrid orbital the carbon at the following molecules a, H3C-CH3 b, H3C-CH= CH2 c, CH3-C Tripl bond C-CH2OH d, CH3CH=O
sample of this compound is combusted in excess oxygen and the products are 2.492 g of CO2 and 0.6495 g of H20. Determine the empirical formula of the active ingredient.
If an excess of ammonia is added to the solution, solid [Cu(NH3)4]SO4xH20 (molar mass = 245.61 g/mol) forms. What is the theoretical yield of product from the reaction?
Consider the titration of 100.0 ml of .100M H2NNH2 by .200 M HNO3. Calculate the pH when the following volumes of HNO3 have been added
Consider a situation in which 161g of P4 are exposed to 176g of O2. A)What is the maximum amount of P2O5 that can theoretically be made from 161g of P4 and excess oxygen
What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.518g/L at 25 ?C and 721
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