You purchase a bucket of 100 radioactive particles. Initially there are 100 of isotope A with a half-life of 5.0 minutes, which decay into a second stable isotope B. On average how long will you have to wait until there are 75 particles of isotope B

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.