1) os-182 has a half-life of 21.5 hours. how many grams of a 10 g sample would have decayed after
exactly three half-lives?

How does chemistry affect our world? a. chemicals makes our world more polluted. b. chemicals keeps us healthy. c. chemicals can or hurt our world. d. chemicals make our world safe to live in.

Which statement best describes the function of enzymes?

If many scientists conduct the same or similar experiments, and all obtain similar results, a can be written, which is a generally agreed-upon statement that explains and predicts how a natural phenomenon works.