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Discussion 1: FLaReS Principle
Select one of the statements below to test the claim. Apply the knowledge you have gained in on atoms and the FLaReS principles systematically show how you arrived at your conclusion for the statement and comment/discuss on a minimum of three other posts in reasonable detail
A health-food store has a large display of bracelets made of copper metal. Some people claim that wearing such a bracelet will protect the wearer from arthritis or rheumatoid diseases.
An alternative health practitioner claims that a nuclear power plant releases radiation at a level that it cannot be measured, but that this radiation is harmful to the thyroid gland. He sells a thyroid extract that he claims can prevent the problem.
The absorbance of this mixture at the Mn wavelength was 0.128 and the absorbance at the Fe wavelength was 0.128. Find the concentration of the unknown Fe solution. (Note: In AAS each element is detected at its specific absorption wavelength)
Describe how the results from this control experiment would be incorporated into the data analysis to the correct for this error.
Calculate the mass of sodium acetate that must be added to 500.0mL of 0.200M acetic acid to form a pH = 5.00 buffer solution.
Question- Technical grade ether contains small amounts of ethanol and water. Why does the procedure call for using technical grade ether for extraction, after you were so careful to avoid moisture in early steps or in the reaction
The acid dissociation constants listed in most standard reference texts for carbonic acid actually apply to dissolved CO2. For a CO2 partial pressure of 8.3×10-4 atm in the atmosphere, what is the pH of water in equilibrium with the atmosphere
What is the enthalpy change when a 4.0 gram sample of aluminum burns in excess of oxygen to form aluminum oxide?
a 0.12m solution of a weak acid ha has ph 2.49. what is the ka of this
what plot would you construct to determine the rate constant k for this reaction. C) what would be the half-life for this reaction. will it depend on the initial concentration of reactant
Amstop Company issues $20,000,000 of 10-year, 9% bonds on March 1, 2007 at 97 plus accrued interest. The bonds are dated January 1, 2007, and pay interest on June 30 and December 31. What is the total cash received on the issue date?
The reversible chemical reaction has the following equilibrium constant: Kc=[C][D]/[A][B]=7.0 Initially, only A and B are present, each at 2.00 M .
The HCl turns the indicator red and the NaOH turns the indicator purple, but what happens to the indicator when the 2 solutions are mixed? Also, is there a temperature increase with the reaction?
what are the values of the entropy changes system surroundings and universe for the cooling of 1 mol of o2 g from 298 k
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