Please Help! It's a little bit urgent but Thank you for the help!

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

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.

What are the chemical names of these compounds? ke: mg3n2: reset next