3. A student performed an experiment similar to the one in this module to determine the empirical formula of a compound containing chromium (Cr) and O. After heating 0.4550 g of pure Cr wire in an
excess of air, the sample was cooled and weighed. The mass of the compound formed was 0.8749 g.
The molar masses of Cr and O are 52.00 g mol- and 16.00 g mol-, respectively.

Which is a characteristic of mixtures?

Which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology

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.