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Would the change in entropy associated with the construction of an octahedral field of ligands about a metal ion be positive or negative? Briefly explain ( I think it's positive but I'm having a tough time explaining). Does this result mean that the change in enthalpy of this process must be negative in order for the process to be spontaneous under standard state conditions? How come?
to scale-forming water to convert calcium carbonate to calcium bicarbonate. write the chemical equation for this reaction.
Silver consists of two major isotopes with the following percent abundances and atomic masses: 107Ag (51.84% and 106.90509 amu) and 109Ag (48.16% and 108.90476 amu). Calculate the average atomic mass of silver to five significant digits.
Sodium bicarbonate decomposes to form the final solid product sodium oxide. Using a balanced equation, you are to convert the grams of sodium bicarbonate, one number is 5.213, to moles.
they are stable molecules with normal bonds and are frequently isolated. d. all reactions involve reaction intermediates, but not all have activated complexes. e. they are intermediate structures which have characteristics of both reactants and pr..
Analysis of the products revealed two methylated sugars: 2,3,6-tri-O-methyl-D-glucose, 2,4-di-O-methyl-D-glucose and 2,3,4,6-tetra-O-methyl-D-glucose. The ratio of these sugars was 20:1:1. determine the structure of the polysaccharide?
estimate the volume of 5 M NaOH must be added to adjust the pH from 4 to 9 solution of 100mL 100mM phosphoric acid
In a titration of 25.80 mLs of 0.256 M HCOOH (formic acid, Ka = 1.8x10-4) with 0.286 M KOH, how many mLs of titrant will be required to reach the equivalence point?
Calculate the time needed for the amount of ethane to fall from 1.43 10-3 mol to 2.00 10-4 mol in a 500. mL reaction vessel at 700.°C.
replacement compounds for the Freons have gone into production: HFC-134a (chemical formula: CH 2 FCF 3 ) and HCFC-124 (formula:CHClFCF 3 ) In 1991. Determine the molar masses of these two compounds
If the wave functions describing the 2s and two of the 2p orbitals are combined, the identical orbitals form bond angles of what degree?
Calculate O's aqueous solubility in surface waters of this lake. B.) Will the amount of O2 produced by photosynthesis cause O2's aqueous solubility to be exceeded in 1L of this lake water
A 41 kg person drinks 250. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 17% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
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