Cho 80g dung dịch NaOH 20% tác dụng vừa đủ với 200g dung dịch H2SO4 tạo ra muối trung hòa a. Viết phương trình phản ứng

b. Tính nồng độ phan trăm dung dịch H2SO4 đã dùng

c. Tính nồng độ phần trăm các chất trong dung dịch sau phản ứng.

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.

  the mississippians were considered to be  horticulturalists, which means they were

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false