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(1) Briefly explain the similarities and differences between nitric oxide oxidation and sulfur dioxide oxidation in the troposphere. Do these two reactions also occur in the stratosphere? Explain why or why not.
An object is said to have a negative potential energy. Because it is preferable not to work with negative numbers, how can you change the value of the object's potential energy without moving the object?
When 40 mL of 0.500 M HCl is titrated with 0.600 M NaOH, the pH increases. What is the pH of the solution after 33 mL of 0.600 M NaOH has been added. (assume volumes are additive)
What is the molecular formula of a compound given the molar mass of the compound is 168.282 g/mol and its empirical formula is C4H4S
Calculate the molar mass of the acid. After 11.7 mL of base had been added during the titration, the pH was determined to be 5.17. What is the Ka of the unknown acid
The accepted value (mu) for a standard sample of chloride was 34.63 percent chloride. Triplicate analysis of this material by a new procedure yielded a mean value of 34.71 and an estimated standard deviation of 0.04
A water-insoluble compound is discovered to be soluble in 10% NaOH. Which of the following substances is most likely to be the compound?
for the following equilibrium a 2b lt-gt 3cthe initial concentrations of species are 0.10 m a 0.20 m b and 0.30 m c
The isotactic conformation of polypropylene is more regular than the syndiotactic conformation of polypropylene. C. Vinyl Polymers can exist as both Cis and trans isomers.
How do the values of delta G compare to those calculated from delta H and delta S? which of these two methods could be used to determine how delta G changes with temp?
Question- A drinking water has a calcium concentration of 17 ppm. What is the pH of this lake? It may (or may not ) help to remember that the atomic weight of calcium is 40.1 g/mol.
Problem- A 32.1g iron rod, initially at 22.5C, is submerged into an unknown mass of water at 62.7C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 58.6C. What is the mass of water?
If 115 of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
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