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At 25°C the reaction CaCrO4 <-> Ca(^2+) CrO4(^2-) has an equilibrium constant, KC= 7.1E-4. What are the equilibrium concentrations of Ca2+ and CrO42- in a saturated solution of CaCrO4?
a 5.00 ml sample of isopropyl alcohol has a mass of .930 g whe measured at 20 degrees celsius. what is the specific
Problem- The carbon 14 activity in a papyrus growing along the Nile River today is 231 decay events per kilogram of carbon. if a papyrus scroll found in the ruins of ancient Egypt has a carbon 14 activity of 145 decay events per kilogram of carbon..
The second-order reaction 2 Mn(CO)5 Mn2(CO)10, has a rate constant equal to 3.0 x 10^9 M-1 s-1 at 25C. If the initial concentration of Mn(CO)5 is 2.0 x 10-5 M, how long will it take for 90.% of the reactant to disappear?
that the reaction was endothermic. If the enthalpy of reaction is negative, then we say that energy was released or that the reaction was exothermic. Most chemical reactions are exothermic.
What are the partial pressure in atm of the gases in a mixture that contains 1.0g of hydrogen and 8.0g of Argon in a 3.0L container at 27.0C. What is the total pressure
An energy maximum in a reaction-energy diagram would be labeled as which of the following?
1. Is access to affordable health care a just outcome of antitrust regulations in the U.S.? 2. What is competitive health care, and is a competitive health care industry an end or the means to the higher end of ensuring every U.S. resident the righ..
What are some differences and/or similarities in the type of inhibition caused by heat, acid or base and heavy metal ions on enzyme activity
Problem- Iodine-131 is used in the diagnosis and treatment of thyroid disease and has a half-life of 8.0 days. If a patient with thyroid disease consumes a sample of Na131 I containing 10. ?g ^131I, how long will it take for the amount of ^131I to..
Each of the following compounds exhibits a single 1H NMR peak. Approximately where would you expect each compound to absorb? a. cyclohexane b. acetone c. benzene d. glyoxal (ethandial) e. dichloromethane f. trimethylamine ((CH3)3N)
1) Write a balanced equation as in footnote 2 for the neutralization of formic acid with sodium hydroxide?
Compute a wavelength of the yellow light emitted by a sodium lamp if the frequency of the radiation is 5.10*10^-14hz
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