Calculate the atomic mass of lead, if the mass of 0.2 mol of it equals 41.4 grams

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

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.

Chemistry worksheet - i am not sure what they are asking for exactly?