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Write a balanced net ionic equation for the following dissolution reaction: Zn(OH)2 in aqueous NH3 to form Zn(NH3)4 2+
Why is it an important concept that atoms generally appear in whole number molar ratios to each other in chemical compounds, and in general, would you expect that students would find this ratio to be lower or higher than the actual ratio
a solution is prepared by dissolving 23.7g of CaCl2 in 375g of water. The density of the resulting solution is 1.05g/mL.
Calculate the amount of heat required to completely sublime 78g of solid dry ice at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3kJ/mol .
How many independent linear combinations are possible for four 1s orbitals? (b) Draw pictures of the linear combinations of H1s orbitals for a hypothetical linear H4 molecule
A 3.5514 g of a chromium oxide was found to contain 2.4299 g of chromium and 1.1215 g oxygen. What is the empirical formula for this chromium oxide
How many grams of oxygen gas (O2) will it take to oxidize 1 pound of iron metal? Make sure to show the redox reaction and all work.
The pickering series for the He+ ion corresponding to a series of transitions, in which electrons fall into the level with n=4. Find The longest wavelength transition of the pickering series in Angstroms
What is the boiling point of a solution of 0.25g of a nonvolatile solute (molar mass 85 g/mol) dissolved in 12g Benzene. Kbp for benzene = 2.53 (oC/m), Normal boiling point 80.10 oC.
When 0.231g of phosphorus reacts with chlorine to form phosphorus trichloride, in a coffee cup calorimeter of heat capacity 216J/degreeC, the temperature of the calorimeter rises by 11.06C
which caused the CO2 in the sample to precipitate as BaCO3. The excess base was back-titrated to a phenolphthalein end point with 23.6ml of .0108 M HCl. What is the concentration of CO2 in the air in parts per million? use 1.98g/L for the density ..
Explain why the major product that results from the synthesis of an azo dye corresponds to addition of the arene to the distal nitrogen of benzenediazonium.
aniline, an organic amine, C6H5NH2, a weak base with Kb of 4.0x10^-10, reacts with water to form its conjugate acid, C6H5NH3^+. write the equation and the base dissociation constant for aniline.
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