What volume (in mL) of a 0.250 M sodium sulfate solution is needed to precipitate all the barium, as barium sulfate, from 12.5 mL of a 0.150 M barium nitrate solution? Provide the balanced chemical equation:

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.