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Discuss the findings of recent epidemiological studies on ozone. You may use the information in your text, or the EPA website (https://www.epa.gov/). After analyzing this information, do you think that the EPA should set lower limits on ozone emissions? Why, or why not?
What is the theoretical yield of benzilic acid in this experiement when 100 mg of benzil is used as the reactant
The rate constant of a chemical reaction increased from 0.100s^-1 to 2.90s^-1 upon raising the temperature from 25.0 degree celcius to 43.0 degree celcius
DNA is thought to be the chemical compound responsible for the process of heredity. A sample of DNA was found to have density 1.10 g/cm^3 and its molecular weight was estimated to be 3.04 x 10^8 g. What is the average volume occupied by one DNA mo..
what is the purpose of placing a lead apron on a person who is receiving routine dental X-rays? d)why are the walls in a radiation lab built of thick concrete blocks
Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25°C.
What would you use to prepare a buffer system with a pH of around 4.2. What would you use to make a buffer with a pH of around 9.2? Describe the process you used to choose the correct buffer for each pH.
An unknown compound contains only C, H, and O. Combustion of 5.50 g of this compound prodced 11.0 g of CO2 and 4.50 g of H2O. What is the empirical formula of the unknown compound.
Calcium carbide (CaC2) reacts with water to form acetylene (C2H2) and Ca(OH)2. From the following enthalpy of reaction data, calculate Δf for CaC2(s):
tris acid dissociation constant is 8.32 x 10 -9. I have 0.1 m soln of tris in protonated form, o.1m soln of HCL and NAOH, and ample distilled water. Describe the preparation of 1L soln of 0.02m tris buffer, ph is 7.8
Using the standard entropy values: H2(g), S° = +130.6 J mol-1 K-1 I2(s), S° = +116.12 J mol-1 K-1 HI(g), S° = +206.0 J mol-1 K-1 calculate the standard entropy change, DeltaS°, for the reaction
Calcium hydrogen phosphate is a component of plant fertilizers (a source of phosphate). It is a relatively insoluble hydrated ionic compound, CaHPO4·2H2O, with a Ksp of 2.7×10-7 at 25°C
If 25.0 mL of AgNO3 is needed to precipitate all the Cl- ions in a 0.795 mg sample of KCl(forming AgCl), what is the molarity of the AgNO3 solution.
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