A piece of block that measures 4.0 cm by 5.0 cm by 3.0 cm has a mass of 180.0 grams. What is the density of the block?

Stage in which a typical star has completely stopped fusion

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.

Is powdered sports drink ionic or covalent ? 10pts !