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For equal moles of CaCl2 as well as Fe(NO3)3 dissolved in the same volume of distilled water how do you expect the conductivities of each solution to compare? Make clear our reasoning
Which statement best desrcibes the energy change as bonds are formed and broken in this reaction ?
Using the Bohr equation for the energy of any level in a hydrogen atom, calculate the energy of each level, n=1 through n=8 and n=(infinity), f. Calculate change in Energy
Calculate the pH of a buffer solution obtained by mixing 400.0 mL of 0.200 M acetic acid solution and 100.0 mL of a 0.300 M sodium hydroxide solution.(The pKa of Acitic Acid, CH3OOH is 4.74)
What is partial pressure of O2 in atmospheres? What is the partial pressure of Ne in atmospheres?
Calculate the Ka of an unknown monoprotic acid .When 15ml of the acid was titrated with 28 ml of 0.15M sodium hydroxide the equivalence point was reached at a ph of 8.48
An 8mL sample of an unknown concentration of NH3 is titrated with HCl. It is found that 12mL of 0.10M HCl is required to reach the equivalence point. What was the concentration of the NH3 in the initial 8mL sample?
The spectroscopic data of diatomic iodine shows a vibrational frequency of 214.5 cm-1, rotational constant of 0.03737 cm-1, and D0 of 12,440 cm-1. If the enthalpy of reaction is 153.97 KJ, Does this value make sense based on the spectroscopic data..
Explain why the Rf values changed when the eluant was changed from 100% petroleum ether to a 95:5 mixture of petroleum ether-ethyl acetate.
which of the following species would be expected to have chemical properties most similar to those of the nitrogen
H2(g) + F2(g) 2HF(g) H = -542 kJ How many grams of H2(g) would have to react to produce 197 kJ of energy?
In the synthesis of methyl salicylate from salicylic acid, there are density of methyl salicylate, methylene chloride and methanol. Why might the layers "switch" during the extraction
Stoichiometry limiting reagent: find the reagent in excess. then calculate the mass or volume of the products formed.
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