The conductivity of 0.20 m solution of kcl at 298k is 0.25cm -1 calculate molar. Conductivity

What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

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.

How might this scientific phenomena be explained? a paper clip floats on water.