Determine the precision and accuracy of these data for warfarin. Sample 1 Sample 2 Sample 3 Known concentration: 23.2 ng/mL 65.9 239 ng/mLExperimentally determined values: 34.5 60.3 251ng/mL 19.6 (ng/mL) 46.5 231 24.9 59.1 209 21.7 78.4 255 21.6 58.0 201 25.8 61.1 227

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.

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

What type of matter is made of only one kind of atom