Questions from General Chemistry

Q: Give some examples of how we make good use of oxidation–

Give some examples of how we make good use of oxidation– reduction reactions in everyday life.

Q: Why is fluorine always assigned an oxidation state of -1?

Why is fluorine always assigned an oxidation state of -1? What oxidation number is usually assigned to the other halogen elements when they occur in compounds? In an interhalogen compound involving fl...

Q: Balance each of the following half-reactions, which take place

Balance each of the following half-reactions, which take place in acidic solution. a. SiO2(s) / Si(s) b. S(s) / H2S(g) c. NO3–(aq) / HNO2(aq) d. NO3–(aq) / NO(g)

Q: Balance each of the following oxidation–reduction reactions, which take

Balance each of the following oxidation–reduction reactions, which take place in acidic solution, by using the “half-reaction” method. a. I-(aq) + MnO4-(aq) / I2(aq) + Mn2+(aq) b. S2O82-(aq) + Cr3+(...

Q: During the research that led to production of the two atomic bombs

During the research that led to production of the two atomic bombs used against Japan in World War II, different mechanisms for obtaining a supercritical mass of fissionable material were investigated...

Q: How have 53 131

How have 53 131

Q: The “Chemistry in Focus” segment Yellow Jeans? discusses the

The “Chemistry in Focus” segment Yellow Jeans? discusses the oxidation–reduction reaction required to turn the dye used in denim jeans from yellow to blue. The reaction is from leucoindigo to indigo....

Q: Assign the oxidation state for the element listed in each of the

Assign the oxidation state for the element listed in each of the following compounds:

Q: A certain radioactive nuclide has a half-life of 80.

A certain radioactive nuclide has a half-life of 80.9 years. How long does it take for 87.5% of a sample of this substance to decay?

Q: Which of the following statement(s) is(are)

Which of the following statement(s) is(are) true? a. A radioactive nuclide that decays from 1.00 * 1010 atoms to 2.5 * 109 atoms in 10 minutes has a half-life of 5.0 minutes. b. Nuclides with large...