Seaborgium-245 has the shortest half-life, measuring in 4.5 milliseconds. If you have a 5000 gram sample of this substance, how long will it take until you only have 1 gram sample remaining? (answer in milliseconds)

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?