Which of the following best explains why you put KI and Pb(NO3)2 into two separate test tubes before mixing them? 1)to observe both solutions before the reaction
2)to predict the products
3)to make an accurate measurement of the amount of each solution
4)to make it easier to mix the solutions

(EDGE)

Why is carbon ideal for making different compounds?

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.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?