If O2 was the excess reagent, 8.3 mol of H2S were consumed, and 13.7 moles of water were collected after the reaction has gone to completion, what is the theoretical yield of the reaction in moles?

The answer for #3 is c but i don't know why

What forms when chemical reactions combine pollution with sunlight?

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.