One method of analyzing amino acids is the van slyke method. the characteristic aminogroups (nh2) in protein material are allowed to react with nitrous acid, hno2, to form n2 gas. from the volume of the gas, the amount of amino acid can be determined. a 0.0604‑g sample of a biological sample containing glycine, ch2(nh2)cooh, was analyzed by the van slyke method and yielded 3.70 ml of n2 collected over water at a pressure of 735 torr and 29˚c. what was the percentage of glycine in the sample?

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

What is the molar mass of a gas that has density of 2.054 g/l

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world