You Marie Curie assistant and your task is to study a piece of material and 2 points track its decay. You are starting with a 10kg lump of an unknown material. After 5 days you measure it again and only have 7.5kg remaining of the original material, the other 2.5kg is now something else. Can you determine the half life? If so, what is the half life of this material? O 5 days O O 10 days © 15 days 20 days​

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Effect of rotenone and antimycin a on electron transfer rotenone, a toxic natural product from plants, strongly inhibits nadh dehydrogenase of insect and fish mitochondria. antimycin a, a toxic antibiotic, strongly inhibits the oxidation of ubiquinol. (a) explain why rotenone ingestion is lethal to some insect and fish species. (b) explain why antimycin a is a poison. (c) given that rotenone and antimycin a are equally effective in blocking their respective sites in the electron-transfer chain, which would be a more potent poison? explain.