How much copper will precipitate when 10.0 g of granular zinc are added to solution containing 16.0 g of aqueous copper (II) sulfate? What is in excess, and by how much?

1. list three scientific reasons cockroaches may fly.

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.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?