A part of the periodic table is shown. A portion of the sixteenth and seventeenth columns of the periodic table is shown. Column 16 reads eight oxygen, 16 sulfur, and 34 selenium. Column 17 reads nine flourine, 17 chlorine, and 35 bromine. (there is also a pic)

Which of the following elements is less reactive than the others?

Bromine (Br)
Oxygen (O)
Selenium (Se)
Sulfur (S)

Tell me the iupac names of the following alcohols:

How many moles are in 123.0 grams of kclo4?

what is your question? collegechemistry 5+3 pts in november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.