Amino acids are important biological molecules that serve as the building blocks of proteins. amino acids, like valine below, can be synthesized in just two steps using a simple carboxylic acid starting material and performing a hell–volhard–zelinsky (hvz) reaction followed by a nucleophilic substitution. below, provide an appropriate carboxylic acid starting material and the product of the hvz reaction that will eventually lead to the formation of valine.

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

What is the percentage of hydrogen in c2h4